1978 Cadillac Commercial Chassis Car Parts & Accessories

You have come to the right place if you need new or replacement parts for your 1978 Commercial Chassis. Advance Auto carries over 796 aftermarket parts for your 1978 Cadillac Commercial Chassis, along with original equipment manufacturer (OEM) parts. You will find amazing prices on 1978 Commercial Chassis Transmission Parts and Clutch Systems. Plus, our selection of 1978 Body Parts for your Commercial Chassis are some of the lowest in the market.

Find replacement parts and upgrades for your 1978 Cadillac Commercial Chassis. Use our customer reviews of Automotive Accessories parts and others, along with user ratings on the many of the products we offer. You won’t find an easier way to shop for 1978 Cadillac Commercial Chassis performance parts, 1978 Cadillac Commercial Chassis body parts, interior components, or any type of part for that matter. Get your Commercial Chassis upgraded or back in pristine shape by shopping Advance Auto Parts.

1978 Cadillac Commercial Chassis Body Parts

Below you can find the top 1978 Cadillac Commercial Chassis aftermarket accessories. Want to see the complete catalog of Body Parts? Click on “View All” to view each individual Cadillac 1978 Commercial Chassis part.

Locksmart – Door Lock Kit (Part No.DL15800)

Door Lock Kit

from

$24.29
LockSmart® is a specialized aftermarket lock brand featuring door, trunk, and ignition lock cylinders. LockSmart® provides OE fit, form, and function locks across domestic and import applications for both late and older model vehicles.

Product Features:
  • All door locks are perfectly matched to the original for precision installation
  • Professional quality construction using solid brass tumblers, chrome plated brass keys, die-cast zinc lock cores and multiple, randomly assigned key codes ensures superior operation
  • Decades of industry leading research and development focused on meeting the technician’s needs
  • With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues
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Dorman – Help – Door Lock Rod Clips (Part No.75455)

Door Lock Rod Clips

from

$7.99
This door lock rod clip is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this door lock rod clip matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this clip is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Dorman – Help – Window Rollers (Part No.74430)

Window Rollers

from

$9.49
This window regulator roller is designed to match the fit and function of the original roller on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this window regulator roller is designed to match the fit and function of the original part on specified vehicles
  • Restores functionality – reliable replacement for a roller that has failed due to wear
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest – Door Jamb Switch (Part No.S208)

Door Jamb Switch

from

$11.99
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • Our parts are 100% tested to verify both mechanical and electrical switching performance.
  • Decades of industry leading research and development focused on meeting the technician’s needs
  • Robust design and high grade materials meet the stringent demands of today’s service professional
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
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ACDelco – Trunk Lock with Key (Part No.D1425B)

Trunk Lock with Key

from

$13.99
GM Genuine Parts Trunk Locks are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Dorman – GM Interior Panel Retainer (Part No.963-035D)

GM Interior Panel Retainer

from

$4.49
Constructed of quality materials, this multi-purpose retainer provides the same function and versatility as the original equipment retainer ensuring long service life.

Product Features:
  • Ideal replacement – this retainer matches the fit and function of the original equipment retainer for this vehicle application
  • Quality material – this retainer is made of durable material for long-lasting service
  • Versatile design – this retainer is suitable for a variety of automotive uses
  • Excellent value – this part offers original equipment quality at a competitive cost
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Carquest Premium – Door Jamb Switch (Part No.SAA3753)

Door Jamb Switch

from

$5.49
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Dorman – Assorted Panel Retainers (Part No.963-026D)

Assorted Panel Retainers

from

$4.49
Constructed of quality materials, this multi-purpose retainer provides the same function and versatility as the original equipment retainer ensuring long service life.

Product Features:
  • Ideal replacement – this retainer matches the fit and function of the original equipment retainer for this vehicle application
  • Quality material – this retainer is made of durable material for long-lasting service
  • Versatile design – this retainer is suitable for a variety of automotive uses
  • Excellent value – this part offers original equipment quality at a competitive cost
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Carquest Premium – Door Lock Kit (Part No.DLC1051)

Door Lock Kit

from

$20.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Carquest – A/C Auto Temperature Control Relay (Part No.R664)

A/C Auto Temperature Control Relay

from

$15.99
BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • Rotors use a durable phenolic plastic for long life.
  • Rotors have a stainless steel spring for OE performance.
  • All parts are manufactured to stringent quality requirements. Our plants are TS16949 and ISO9001 certified which ensures that every part is the right part for the right vehicle.
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
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Dorman – Panel Trim Retainer – Interior – GM (Part No.45472)

Panel Trim Retainer - Interior - GM

from

$1.79
Constructed of quality materials, this multi-purpose retainer provides the same function and versatility as the original equipment retainer ensuring long service life.

Product Features:
  • Ideal replacement – this retainer matches the fit and function of the original equipment retainer for this vehicle application
  • Quality material – this retainer is made of durable material for long-lasting service
  • Versatile design – this retainer is suitable for a variety of automotive uses
  • Excellent value – this part offers original equipment quality at a competitive cost
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Carquest Premium – Door Lock Kit (Part No.DLC1167)

Door Lock Kit

from

$22.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Carquest Premium – Trunk Lock (Part No.TLC1052)

Trunk Lock

from

$13.49
All modern vehicles consist of several independent operating systems controlled by a main system processor with independent sub-processors. The sub-processors provide class 2 serial information data to the main processor while handling the operation of the system and carry the circuit load to protect the main operating system. When replacing any level processor programming may be needed to enter the unit into the vehicles main operating system.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Carquest Premium – Trunk Lock (Part No.TLC1005)

Trunk Lock

from

$12.49
All modern vehicles consist of several independent operating systems controlled by a main system processor with independent sub-processors. The sub-processors provide class 2 serial information data to the main processor while handling the operation of the system and carry the circuit load to protect the main operating system. When replacing any level processor programming may be needed to enter the unit into the vehicles main operating system.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Carquest Premium – Trunk Lock (Part No.TLA1007)

Trunk Lock

from

$9.79
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Carquest Premium – Door Jamb Switch (Part No.SBA4439)

Door Jamb Switch

from

$6.79
The main device in any electrical circuit is a switch. In an electrical circuit a device is required to turn a component on or off when commanded by the operator, within the switch are contacts that will complete the electrical path to the load, or driven device. The operation of a switch may be manual from a person or could be electrical from some sort of controller or computer.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
  • Where applicable electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
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Dorman – Panel Trim Retainer-Interior-GM (Part No.799-125)

Panel Trim Retainer-Interior-GM

from

$4.79
Constructed of quality materials, this multi-purpose retainer provides the same function and versatility as the original equipment retainer ensuring long service life.

Product Features:
  • Ideal replacement – this retainer matches the fit and function of the original equipment retainer for this vehicle application
  • Quality material – this retainer is made of durable material for long-lasting service
  • Versatile design – this retainer is suitable for a variety of automotive uses
  • Excellent value – this part offers original equipment quality at a competitive cost
See More

Dorman – Assorted Panel Retainers (Part No.963-026)

Assorted Panel Retainers

from

$3.49
Constructed of quality materials, this multi-purpose retainer provides the same function and versatility as the original equipment retainer ensuring long service life.

Product Features:
  • Ideal replacement – this retainer matches the fit and function of the original equipment retainer for this vehicle application
  • Quality material – this retainer is made of durable material for long-lasting service
  • Versatile design – this retainer is suitable for a variety of automotive uses
  • Excellent value – this part offers original equipment quality at a competitive cost
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Dorman – Panel Trim Retainer – Interior – GM (sold by each) (Part No.700-367)

Panel Trim Retainer - Interior - GM (sold by each)

from

$1.29
Constructed of quality materials, this multi-purpose retainer provides the same function and versatility as the original equipment retainer ensuring long service life.

Product Features:
  • Ideal replacement – this retainer matches the fit and function of the original equipment retainer for this vehicle application
  • Quality material – this retainer is made of durable material for long-lasting service
  • Versatile design – this retainer is suitable for a variety of automotive uses
  • Excellent value – this part offers original equipment quality at a competitive cost
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1978 Commercial Chassis Transmission Parts

Customers frequently purchase these best-selling 1978 Cadillac Commercial Chassis Transmission Parts.

National – Bearings (Part No.M802011)

Bearings

from

$14.79
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

National – Multi Purpose Seal (Part No.6712NA)

Multi Purpose Seal

from

$10.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

Imperial – High Performance Transmission Oil Cooler (Part No.240516)

High Performance Transmission Oil Cooler

from

$85.99
Product Features:
  • Imperial high-performance transmission cooler
  • Size: 3/4″ x 10″ x 15-7/8″
  • SAE 45-degree fittings for maximum reliability
  • Electrostatic powder-coated to prevent corrosion
  • SAE 45 degree fittings for maximum reliability
  • Electrostatically powder coated to prevent corrosion
  • All aluminum lightweight construction
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National – Multi Purpose Seal (Part No.9449)

Multi Purpose Seal

from

$9.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

Felpro – Transmission Oil Pan Gasket (Part No.TOS 18621)

Transmission Oil Pan Gasket

from

$9.29
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Unsurpassed quality you can trust
  • Validated for fit, form and function
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Dorman – Transmission Line Connector (Part No.800-755)

Transmission Line Connector

from

$11.49
Made of quality materials, this automatic transmission oil cooler line connector matches the fit and function of a damaged original equipment connector to restore leak-free performance between the transmission and the oil cooler.

Product Features:
  • Quality replacement – this transmission cooler connector matches the fit and function of the original equipment connector
  • Durable construction – this oil cooler line connector is made of quality materials for a precise fit and leak-free durability
  • Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
  • Ideal shop supply – this connector is recommended to have on hand any time service is being performed on the transmission oil cooler line
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Driveworks – Oil Seal (Part No.S-2043)

Oil Seal

from

$7.79
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Imperial – Maxi-Kool® XL Transmission Oil Cooler (Part No.243007)

Maxi-Kool® XL Transmission Oil Cooler

from

$73.99
The Imperial Maxi-Cool® XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.

Product Features:
  • Imperial Maxi-Cool® plate and fin transmission cooler
  • Size: 3/4″ x 11″ x 7-1/2″
  • Mid-size and full-size cars, pickups
  • GVWR up to 20,000 lbs.; towing up to 2,500 lbs.
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B & M – Shifter Accessories, Bracket and Lever Kit Fits TH400/TH350/TH250/200-4R/700R4 (Part No.35498)

Shifter Accessories, Bracket and Lever Kit Fits TH400/TH350/TH250/200-4R/700R4

from

$40.99
Bracket and Lever Kit for TH-350, 400, 200, 700-R4, 4L60E and 200-4R transmissions.

Product Features:
  • Incl. Cable Bracket/Shift Lever/Spacers
  • Incl. Swivel/Cotter Pin
  • Natural Finish
  • Sold as a kit
  • Replacement part
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B & M – Tork Master 2400 (Part No.20404)

Tork Master 2400

from

$327.99
Torque Converter – Tork Master 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: Tork Master 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) The Tork Master is B&M’s lowest cost performance torque converter. The Tork Master is an excellent all-around performance street converter. The best value priced street converters available, Tork Master converters come with a new precision pump drive tube and all are pressure tested and fully balanced. The Tork Master torque converter is not recommended for big block or supercharged applications. New alloy steel pump drive tube. Needle thrust bearing when factory equipped. New thrust washer between turbine and cover when required. Due to torque converter core availability, the actual converter size may vary but performance functionality will be as advertised.

Product Features:
  • New Precision Pump Drive Tube
  • Pressure Tested
  • Fully Balanced
  • Needle Thrust Bearing
  • New Thrust Washer
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Imperial – Mounting Kit System (Part No.226201)

Mounting Kit System

from

$11.49
Product Features:
  • Imperial mounting kit system
  • For installation of transmission coolers and electric fans
  • Provides quick, effective installation of Imperial products
  • Contains nylon mounting rods, foam pads and locking buttons
  • Atermarket electric fan and cooler mounting rods
  • Made with the highest quality materials
  • Quality machined for durability
  • Removable buttons for relocation
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National – Bearings (Part No.A-3)

Bearings

from

$14.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

National – Cylindrical Bearing (Part No.5707)

Cylindrical Bearing

from

$22.99
Manufactured with premium-grade steel, National® cylindrical bearings are designed and engineered to meet OE specifications.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Controlled heat treating process for lasting performance and extended bearing life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

Imperial – Maxi-Kool® XL Transmission Oil Cooler (Part No.243012)

Maxi-Kool® XL Transmission Oil Cooler

from

$81.99
Product Features:
  • Class “A” motor homes, large travel trailers, 5th-wheel trailers
  • GVWR up to 30,000 lbs.; towing up to 10,000 lbs.
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ATP – AT DPSTK TUBE SEAL (Part No.SO-35)

AT DPSTK TUBE SEAL

from

$5.99
AT DPSTK TUBE SEAL

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-48)

Automatic Transmission Vacuum Modulator

from

$34.49
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE fit, form and function
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National – Multi Purpose Seal (Part No.8792S)

Multi Purpose Seal

from

$6.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

Imperial – Econo-Kool® Transmission Oil Cooler (Part No.241018)

Econo-Kool® Transmission Oil Cooler

from

$65.99
Product Features:
  • Imperial Econo-Kool« tube and fin transmission cooler
  • Size: 3/4″ x 10″ x 15-7/8″
  • Class “A” motor homes, large travel trailers, 5th-wheel trailers
  • GVWR up to 26,000 lbs.; towing up to 10,000 lbs.
  • Compatible with OEM cooler systems
  • Ultrasonically soldered for reliability
  • 100% pressure testing to 150 PSI for quality assurance
  • High efficiency turbulators
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Pro-King – Automatic Transmission Remanufactured Torque Converter (Part No.GM3)

Automatic Transmission Remanufactured Torque Converter

from

$204.99
Remanufactured using industry-leading techniques to assure enhanced torque performance and extended life. Each unit is harmonically balanced and leak tested with any inherent OE weaknesses corrected. Pro-King torque converters are subject to random ISO 9001 quality tests before leaving the factory.

Product Features:
  • Fluid Balanced
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Imperial – Plate and Fin Style Trans Cooler 3/4" x 9-1/2" x 11" Heavy Duty (Part No.243008)

Plate and Fin Style Trans Cooler 3/4" x 9-1/2" x 11" Heavy Duty

from

$80.99
Product Features:
  • Imperial Rapid-Cool« plate and fin transmission cooler
  • Size: 3/4″ x 11″ x 9-1/2″
  • Pickup trucks and vans, class “C” motor homes, travel trailers to 24′
  • GVWR up to 24,000 lbs.; towing up to 5,000 lbs.
  • 33% more efficient than a comparable tube and fin design
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Imperial – Econo-Kool® Transmission Oil Cooler (Part No.242012)

Econo-Kool® Transmission Oil Cooler

from

$52.99
Product Features:
  • Mid-size and full-size cars, pickups
  • GVWR up to 18,000 lbs.; towing up to 3,500 lbs
  • Compatible with OEM cooler systems
  • Ultrasonically soldered for reliability
  • 100% pressure testing to 150 PSI for quality assurance
  • High efficiency turbulators
See More

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-28)

Automatic Transmission Vacuum Modulator

from

$33.49
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE fit, form and function
See More

B & M – Automatic Shifter, Z-Gate (Part No.80681)

Automatic Shifter, Z-Gate

from

$272.99
Reverse lockout meets NHRA and IHRA requirements. Includes neutral safety switch, backup light switch, black T-Handle. Fits most 3 Speed applications.

Product Features:
  • Base Trims To Custom Fit Floor
  • NHRA/IHRA Reverse Lockout Meets Requirements
  • Includes Neutral Safety Switch
  • Includes Backup Light Switch
  • Includes Black T-Handle and Cable
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Imperial – High Performance Transmission Oil Cooler (Part No.240514)

High Performance Transmission Oil Cooler

from

$81.99
High Performance Transmission Oil Cooler 3/4″ x 7-1/2″ x 15-1/2″. Heavy duty. Black. Imperial High Performance coolers are designed to provide outstanding cooling as well as complement other high-performance accessories.

Product Features:
  • Imperial high-performance transmission cooler
  • Size: 3/4″ x 7-1/2″ x 15-7/8″
  • SAE 45-degree fittings for maximum reliability
  • Electrostatic powder-coated to prevent corrosion
See More

National – Bearings (Part No.M802048)

Bearings

from

$23.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

National – Multi Purpose Seal (Part No.2043)

Multi Purpose Seal

from

$12.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

Driveworks – Taper Bearing Set (Part No.S-A-36)

Taper Bearing Set

from

$16.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

National – Bearings (Part No.A-36)

Bearings

from

$26.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

1978 Commercial Chassis Clutch Systems

No need for it to be difficult to find Clutch Systems for your 1978 Cadillac Commercial Chassis. Compare prices, read reviews, and buy your Commercial Chassis Clutch Systems online for delivery or in-store pick up.

ATP – Automatic Transmission Flex Plate (Part No.Z-124)

Automatic Transmission Flex Plate

from

$102.99
Vehicles with automatic transmissions have a flex plate. The flex plates connects the engine and transmission. Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter and teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The constant expansion and contraction of a flex plate over time can result cracks and/or shearing of the flex plate. A damaged flex plate can create serious (expensive) damage. Broken flex plates can not be repaired, they must be replaced. ATP flex plates are made of high quality steel and contain the correct bolt hole spacing and ring gear teeth just like the original part to ensure long life and durability

Product Features:
  • Balanced to factory specs
  • Fit and function like the original parts
  • Restores normal operation
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B & M – Flexplate, SFI 29.1 Approved, Fits 168-Tooth, 2-Piece Rear Main Seal, Chevy V8 (Part No.20230)

Flexplate, SFI 29.1 Approved, Fits 168-Tooth, 2-Piece Rear Main Seal, Chevy V8

from

$149.99
As performance levels increase, an O.E. style flexplate just won’t cut it and a stronger option is a necessity to prevent transmission and/or converter failure. B&M has you covered with our high performance flexplate designed for 1955-85 GM small block (internally balanced) V8 engines along with 4.3L V6 engines. Also fits 1990 and earlier GM big block (internally balanced) V8 engines with two piece rear main seal. Features include high tensile strength steel construction to resist elongation and cracking, dual bolt pattern 10.75 or 11.5 inch converter mounting locations, 168 tooth ring gear with double-sided welds for added strength and comes with SFI 29.1 safety certification insuring the ultimate in safety and performance. The assembly is then Zinc plated and treated with a Chromate Conversion Coating for added corrosion resistance and durability. B&M SFI approved flexplates are ideal for extreme duty race applications as well as street cars, tow vehicles or other vehicles needing the added protection and toughness that B&M has been delivering since 1953. Compatible with Powerglide, TH350, TH400 and TH700R4 automatic transmissions.

Product Features:
  • NHRA/IHRA Legal For All Classes
  • Includes SFI Certification Sticker
  • Ideal For Street Applications
  • To Extreme Duty Racing
  • To High RPM Use
See More

ATP – FLYWHEEL SHIM (Part No.GS-10)

FLYWHEEL SHIM

from

$26.99
FLYWHEEL SHIM

ATP – ATP Flywheel Shim (Part No.GS-8)

ATP Flywheel Shim

from

$27.99
ATP Flywheel Shim

Hays – Clutches (Part No.14-010)

Clutches

from

$213.99
Clutches

1978 Commercial Chassis Automotive Accessories

Customers frequently purchased the following top Automotive Accessories for their 1978 Commercial Chassis. Click on “View All” to see more great prices on 1978 Commercial Chassis aftermarket replacement Automotive Accessories.

Fiamm – Freeway Blaster High Note Horn (Part No.7210223)

Freeway Blaster High Note Horn

from

$25.99
This High Note Horn meets the high quality specifications for OE manufacturers around the world. It generates a high-frequency sound through a specially designed resonator. Features a heavy-duty wire motor, a body made of steel with a corrosion-resistant finish and includes a universal mounting bracket. Each horn is 12V and can be used as a single or dual terminal install. These horns are extremely compact and lightweight and they meet or exceed OEM, SAE and EEC specifications. Each horn is tested to assure maximum performance. These horns can be mounted singly or as duals. 130 dB.
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Fiamm – Freeway Blaster Low Note Horn (Part No.7211223)

Freeway Blaster Low Note Horn

from

$19.99
This Low Note Horn meets the high quality specifications for OE manufacturers around the world. It generates a high-frequency sound through a specially designed resonator. Features a heavy-duty wire motor, a body made of steel with a corrosion-resistant finish and includes a universal mounting bracket. Each horn is 12V and can be used as a single or dual terminal install. These horns are extremely compact, lightweight and meet or exceed OEM, SAE and EEC specifications. Each horn is tested to assure maximum performance. These horns can be mounted singly or as duals. 130 dB.
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1978 Commercial Chassis Interior Products

Carquest – Turn Signal Switch (Part No.S3249)

Turn Signal Switch

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$37.05
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • Our parts are 100% tested to verify both mechanical and electrical switching performance.
  • Decades of industry leading research and development focused on meeting the technician’s needs
  • Robust design and high grade materials meet the stringent demands of today’s service professional
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
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Dorman – Help – Turn Signal Canceling Cam (Part No.83233)

Turn Signal Canceling Cam

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$10.99
This turn signal cam is designed to match the fit and function of the original cam on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this turn signal cam is designed to match the fit and function of the original cam on specified vehicles
  • Restores functionality – reliable replacement for an original part that has failed due to wear or collision damage
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Driveworks – Headlight Dimmer Switch (Part No.52079)

Headlight Dimmer Switch

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$16.05
Driveworks® offers a line of aftermarket parts and accessories that are commercially acceptable and competitively priced, which provides professional technicians and DIYers with an affordable alternative for repairs.

Product Features:
  • Direct-fit OE replacement ensures ease of installation
  • Designed to meet OE performance
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
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Grant – Use With All Grant Classic/Challenger/Signature Series Steering Wheels, Black (Part No.3196)

Use With All Grant Classic/Challenger/Signature Series Steering Wheels, Black

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$54.99
Standard Installation Kit. This is the standard Grant Steering Wheel Installation Kit. These kits may be used to install all Classic Series, Challenger Series or Signature Series Steering Wheels. Each kit contains complete step-by-step instructions, a die cast hub, grade 5 hardware and matte black trim pieces.

Product Features:
  • Use To Install All Classic, Challenger Or Signature Series Wheels
  • Each Kit Contains Complete Step-By-Step Instructions, A Die Cast Hub, Grade 5 Hardware And Matte Black Trim Pieces
  • ISO/ TS Certified
  • Designed To Mount Our Wheel To Your Rig
  • Use with all Grant Classic/Challenger/Signature Steering Wheels
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Dorman – Help – Brake and Clutch Bushings (Part No.74016)

Brake and Clutch Bushings

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$9.99
This brake pedal bushing is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this brake pedal bushing matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest – Headlight Dimmer Switch Connector (Part No.PT63)

Headlight Dimmer Switch Connector

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$5.99
BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • Our knock sensors are designed to respond to knock frequencies up to 1000 Hz accommodating shifts in engine knock frequency making it a more flexible sensor responding to correct engine knock over a broad range of vehicle conditions
  • Manufacturing processes include an automated data acquisition system to continuously monitor the sensor output to ensure that it responds with appropriate voltage output at the specified frequency range
  • All units are 100% tested using an accelerometer vibration test to ensure trouble-free operation
  • Featuring the broadest sensor coverage in the market, we meet the service professionals needs with the highest quality product every time he opens the box
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
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ATP – SPEEDO GEAR (Part No.YA-15)

SPEEDO GEAR

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$12.99
SPEEDO GEAR

ATP – SPEEDO GEAR (Part No.YA-16)

SPEEDO GEAR

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$14.99
SPEEDO GEAR

Carquest – Dimmer Switch (Part No.52C1001)

Dimmer Switch

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$16.79
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution
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Carquest Premium – Dimmer Switch (Part No.DSC1088)

Dimmer Switch

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$19.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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GM Genuine Parts – Headlamp Dimmer Switch (Part No.D808)

Headlamp Dimmer Switch

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$25.49
GM Genuine Parts Headlight Dimmer Switches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Carquest Premium – Turn Signal Switch (Part No.SAC4598)

Turn Signal Switch

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$40.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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ATP – SPEEDO GEAR (Part No.YA-17)

SPEEDO GEAR

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$19.99
SPEEDO GEAR

ATP – SPEEDO GEAR (Part No.YA-18)

SPEEDO GEAR

from

$17.99
SPEEDO GEAR

Grant – Use With All Grant Signature Series Steering Wheels, Polished, Black, Aluminum (Part No.5196)

Use With All Grant Signature Series Steering Wheels, Polished, Black, Aluminum

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$129.99
Optional Billet Style Installation Kits. Grant Billet Style Installation Kits are an optional styling upgrade. The Billet Style Kits have Grant five-hole mounting pattern and can only be used to install Grant Signature Series Steering Wheels.

Product Features:
  • Highly Polished With A Black Luster Finish
  • Use To Install Grant Signature Series 5 Bolt Steering Wheels
  • ISO/ TS Certified
  • Designed To Mount Our Wheel To Your Rig
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GM Genuine Parts – Turn Signal Switch (Part No.D6223)

Turn Signal Switch

from

$32.99
GM Genuine Parts Turn Signal Switches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Carquest Premium – Dimmer Switch Connector (Part No.PTA1143)

Dimmer Switch Connector

from

$4.29
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Grant – Use With All Grant Signature Series Steering Wheels, Polished, Aluminum (Part No.5196-1)

Use With All Grant Signature Series Steering Wheels, Polished, Aluminum

from

$129.99
Optional Billet Style Installation Kits. Grant Billet Style Installation Kits are an optional styling upgrade. The Billet Style Kits have Grant five-hole mounting pattern and can only be used to install Grant Signature Series Steering Wheels.

Product Features:
  • Highly Polished
  • Use To Install Grant Signature Series 5 Bolt Steering Wheels
  • ISO/ TS Certified
  • Designed To Mount Our Wheel To Your Rig
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B & M – Speedo Cable & Generator for 70244 – GM Converter Lock-Up Control – Service Part (Part No.70209)

Speedo Cable & Generator for 70244 - GM Converter Lock-Up Control - Service Part

from

$86.99
Speedo Cable & Generator for 70244 – GM Converter Lock-Up Control – Service Part

ACDelco – A Note Horn (Part No.D1925C)

A Note Horn

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$54.99
The ACDelco GM Original Equipment Replacement Horn is a GM-recommended replacement for your vehicle’s original component. Activated within your vehicle’s steering wheel, the Original Equipment Replacement Horn will make an audible noise at the front of your vehicle to signal or alert other drivers. This original equipment replacement horn has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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Carquest Premium – Horn (Part No.HAC1001)

Horn

from

$31.49
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • CarQuest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
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