1984 Kenworth T400 Car Parts & Accessories

You have come to the right place if you need new or replacement parts for your 1984 T400. Advance Auto carries over 92 aftermarket parts for your 1984 Kenworth T400, along with original equipment manufacturer (OEM) parts. You will find amazing prices on 1984 T400 Body Parts and Transmission Parts. Plus, our selection of 1984 Alternators and Starters for your T400 are some of the lowest in the market.

Find replacement parts and upgrades for your 1984 Kenworth T400. Use our customer reviews of Interior Products 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 1984 Kenworth T400 performance parts, 1984 Kenworth T400 body parts, interior components, or any type of part for that matter. Get your T400 upgraded or back in pristine shape by shopping Advance Auto Parts.

Best-Selling Fluids and Chemicals for your 1984 Kenworth T400

Upgrade your 1984 Kenworth T400 with one of the 4 best-selling parts in stock, starting at just $19.99.

ZEREX – G05® Full Strength Concentrate Antifreeze / Coolant, 1 Gallon (Part No.ZXG051)

G05® Full Strength Concentrate Antifreeze / Coolant, 1 Gallon

from

$22.99
ZEREX G05® is the automaker approved original chemistry used in newer Ford®, Chrysler® and Mercedes-Benz® automotive and diesel engines. Its Hybrid Organic Acid Technology (HOAT) chemistry combines the best of conventional and organic acid-based chemistry to provide the ultimate protection against rust and corrosion. ZEREX G05 antifreeze/coolant uses the highest-quality virgin ethylene glycol for freeze and boil over protection and a hybrid organic acid corrosion inhibitor package to protect your engines from liner pitting and corrosion.

Product Features:
  • Automaker approved technology. Provides protection for 5 years / 150,000 miles in light duty applications and 3 years / 300,000 miles in heavy duty applications.
  • Formulated for long life performance
  • Low-silicate, low-pH and phosphate-free formula
  • Helps protect all cooling system metals, including aluminum
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ZEREX – G-05 Formula 50/50 Pre-Mixed RTU Antifreeze / Coolant, 1 Gallon (Part No.ZXG05RU1)

G-05 Formula 50/50 Pre-Mixed RTU Antifreeze / Coolant, 1 Gallon

from

$19.99
ZEREX G05® is the automaker approved original chemistry used in newer Ford®, Chrysler® and Mercedes-Benz® automotive and diesel engines. Its Hybrid Organic Acid Technology (HOAT) chemistry combines the best of conventional and organic acid-based chemistry to provide the ultimate protection against rust and corrosion. ZEREX G05® antifreeze/coolant uses the highest quality virgin ethylene glycol for freeze and boil over protection and a hybrid organic acid corrosion inhibitor package to protect your engines from liner pitting and corrosion.

Product Features:
  • Automaker approved technology. Provides protection for 5 years / 150,000 miles in light duty applications and 3 years / 300,000 miles in heavy duty applications
  • Formulated for long life performance
  • Low-silicate, low-pH and phosphate-free formula
  • Helps protect all cooling system metals, including aluminum
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Prestone – Command Antifreeze and Coolant: Concentrate, Cor-Guard Nitrite-Free ELC Red NF-OAT, 1 Gallon (Part No.AFC13000)

Command Antifreeze and Coolant: Concentrate, Cor-Guard Nitrite-Free ELC Red NF-OAT, 1 Gallon

from

$24.49
Prestone Command Cor-Guard Nitrite Free (NF-OAT) Extended Life (ELC) antifreeze+coolant (Concentrate) is designed to work with all Class 1-8 vehicles; Heavy Duty and Light Duty. COR-GUARD technology increases uptime; More miles between service = Less cost to maintain. Utilizing Cor-Guard technology, this formula is designed to protect cooling system parts from corrosion and damage. It instantly protects against the spread of rust, corrosion, pitting, gunk, grime and build-up. It is one fluid that can be used for the whole fleet; all vehicles, coolant colors (LD) and any Nitrite Free OAT engine (HD). Service life is 1,000,000 Miles/20,000 hrs [class 7-8 with wet sleeve liners]. When compared to ESI and low silicate conventional, it is designed to help lower maintenance costs and improve water pump life. This formula is Nitrite Free, provides excellent protection for aluminum and all other engine metals and eliminates the need to add supplemental coolant additives.

Product Features:
  • Cor-Guard Nitrite Free Extended Life Coolant – NF-OAT ELC – RED formula. Compatible with any Nitrite Free OAT and all Light Duty vehicles
  • COR-GUARD technology increases uptime; More miles between service = Less cost to maintain. Instantly stops the spread of rust, corrosion, pitting, gunk, grime and build-up
  • Meets OEM Performance requirements: ASTM D6210, D3306, D4985, D7583; TMC RP338A, RP364; Cummings CES 14603, bulletin 3666132; Detroit Diesel 93K217; Cat EC-1 and many OEM requirements
  • Concentrated formula. Must mix with high quality (distilled/deionized) water to the desired ratio. Can be used for top-off, complete drain and refill or flush and refill of the cooling system.
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Prestone – Command Antifreeze and Coolant: 50/50 Ready-to-Use, Cor-Guard Nitrite-Free ELC Red NF-OAT, 1 Gallon (Part No.AFC13100)

Command Antifreeze and Coolant: 50/50 Ready-to-Use, Cor-Guard Nitrite-Free ELC Red NF-OAT, 1 Gallon

from

$19.99
Prestone Command Cor-Guard Nitrite Free (NF-OAT) Extended Life (ELC) antifreeze+coolant (ready to use) is designed to work with all Class 1-8 vehicles; Heavy Duty and Light Duty. COR-GUARD technology increases uptime; More miles between service = Less cost to maintain. Utilizing Cor-Guard technology, this formula is designed to protect cooling system parts from corrosion and damage. It instantly protects against the spread of rust, corrosion, pitting, gunk, grime and build-up. It is one fluid that can be used for the whole fleet; all vehicles, coolant colors (LD) and any Nitrite Free OAT engine (HD). Service life is 1,000,000 Miles/20,000 hrs [class 7-8 with wet sleeve liners]. When compared to ESI and low silicate conventional, it is designed to help lower maintenance costs and improve water pump life. This formula is Nitrite Free, provides excellent protection for aluminum and all other engine metals and eliminates the need to add supplemental coolant additives.

Product Features:
  • Cor-Guard Nitrite Free Extended Life Coolant – NF-OAT ELC – RED formula. Compatible with any Nitrite Free OAT and all Light Duty vehicles
  • COR-GUARD technology increases uptime; More miles between service = Less cost to maintain. Instantly stops the spread of rust, corrosion, pitting, gunk, grime and build-up
  • Meets OEM Performance requirements: ASTM D6210, D3306, D4985, D7583; TMC RP338A, RP364; Cummings CES 14603, bulletin 3666132; Detroit Diesel 93K217; Cat EC-1 and many OEM requirements
  • Ready to Use formula (prediluted to a 50% Eg and 50% distilled water mix). Perfect for small volume top-off or complete drain and refill of the cooling system
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Most Popular 1984 Kenworth T400 Cooling and Climate Controls

Improve your T400’s performance by choosing from our wide selection of 12 OEM and aftermarket auto parts specifically for your 1984 Kenworth T400.

Carquest Premium – A/C New, with Clutch, with SD7H15 Compressor (Part No.T58700)

A/C New, with Clutch, with SD7H15 Compressor

from

$392.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
  • New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
  • The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
  • All new compressors must pass a helium leak test and pump up function test prior to packaging.
  • O-Rings and gaskets necessary for installation are included.
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Carquest Premium – A/C New, with Clutch, with SD7H15 Compressor (Part No.T58701)

A/C New, with Clutch, with SD7H15 Compressor

from

$275.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
  • New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
  • The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
  • All new compressors must pass a helium leak test and pump up function test prior to packaging.
  • O-Rings and gaskets necessary for installation are included.
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Carquest Premium – AC Pressure Switch (Part No.ACA1349)

AC Pressure Switch

from

$60.99
The Premium Carquest Vehicle Solutions line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Switch monitors system pressures, aiding in proper and efficient control of the compressor, fans and system levels. An improperly functioning A/C Pressure Switch will provide erratic or inaccurate actuation and operation, severely affecting system performance and function. Without reliable and accurate actuation from a properly functioning A/C Pressure Switch, critical components and the system as a whole are left unregulated and unprotected which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to meet or exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Switch.
  • All units are tested using advanced end-of-line equipment that pressurize the A/C Pressure Switch, confirm proper calibration and functionality, and check for leaks to ensure each A/C Pressure Switch meets manufacturing specifications before packaging.
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Carquest Premium – A/C Filter Drier (Part No.T33537)

A/C Filter Drier

from

$46.99
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.

Product Features:
  • All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
  • Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
  • All accumulators and receiver driers are helium leak tested prior to packaging.
  • O-Rings necessary for installation are included.
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Carquest Premium – A/C Expansion Valve (Part No.T38879)

A/C Expansion Valve

from

$44.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • O-Rings necessary for installation are included.
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Carquest Premium – AC Pressure Switch (Part No.ACA1319)

AC Pressure Switch

from

$41.99
The Carquest Premium line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Switch monitors system pressures, aiding in proper and efficient control of the compressor, fans and system levels. An improperly functioning A/C Pressure Switch will provide erratic or inaccurate actuation and operation, severely affecting system performance and function. Without reliable and accurate actuation from a properly functioning A/C Pressure Switch, critical components and the system as a whole are left unregulated and unprotected which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to meet or exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Switch.
  • All units are tested using advanced end-of-line equipment that pressurizes the switch, confirms proper calibration and functionality and checks for leaks to ensure each part meets manufacturing specifications before packaging.
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Carquest Premium – A/C Filter Drier (Part No.T33542)

A/C Filter Drier

from

$41.99
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.

Product Features:
  • All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
  • Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
  • All accumulators and receiver driers are helium leak tested prior to packaging.
  • O-Rings necessary for installation are included.
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Carquest Premium – HVAC Pressure Switch (Part No.ACA1314)

HVAC Pressure Switch

from

$39.99
The Carquest Premium line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Switch monitors system pressures, aiding in proper and efficient control of the compressor, fans and system levels. An improperly functioning A/C Pressure Switch will provide erratic or inaccurate actuation and operation, severely affecting system performance and function. Without reliable and accurate actuation from a properly functioning A/C Pressure Switch, critical components and the system as a whole are left unregulated and unprotected which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to meet or exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Switch.
  • All units are tested using advanced end-of-line equipment that pressurize the A/C Pressure Switch, confirm proper calibration and functionality, and check for leaks to ensure each A/C Pressure Switch meets manufacturing specifications before packaging.
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Carquest Premium – HVAC Pressure Switch (Part No.ACA1331)

HVAC Pressure Switch

from

$39.99
The Carquest Premium line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Switch monitors system pressures, aiding in proper and efficient control of the compressor, fans and system levels. An improperly functioning A/C Pressure Switch will provide erratic or inaccurate actuation and operation, severely affecting system performance and function. Without reliable and accurate actuation from a properly functioning A/C Pressure Switch, critical components and the system as a whole are left unregulated and unprotected which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to meet or exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Switch.
  • All units are tested using advanced end-of-line equipment that pressurize the A/C Pressure Switch, confirm proper calibration and functionality, and check for leaks to ensure each A/C Pressure Switch meets manufacturing specifications before packaging.
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Carquest Premium – HVAC Pressure Switch (Part No.ACA1779)

HVAC Pressure Switch

from

$25.99
The Carquest Premium line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Switch monitors system pressures, aiding in proper and efficient control of the compressor, fans and system levels. An improperly functioning A/C Pressure Switch will provide erratic or inaccurate actuation and operation, severely affecting system performance and function. Without reliable and accurate actuation from a properly functioning A/C Pressure Switch, critical components and the system as a whole are left unregulated and unprotected which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to meet or exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Switch.
  • All units are tested using advanced end-of-line equipment that pressurize the A/C Pressure Switch, confirm proper calibration and functionality, and check for leaks to ensure each A/C Pressure Switch meets manufacturing specifications before packaging.
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Carquest Premium – HVAC Pressure Switch (Part No.ACA1638)

HVAC Pressure Switch

from

$21.29
The Carquest Premium line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Switch monitors system pressures, aiding in proper and efficient control of the compressor, fans and system levels. An improperly functioning A/C Pressure Switch will provide erratic or inaccurate actuation and operation, severely affecting system performance and function. Without reliable and accurate actuation from a properly functioning A/C Pressure Switch, critical components and the system as a whole are left unregulated and unprotected which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to meet or exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Switch.
  • All units are tested using advanced end-of-line equipment that pressurize the A/C Pressure Switch, confirm proper calibration and functionality, and check for leaks to ensure each A/C Pressure Switch meets manufacturing specifications before packaging.
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Carquest Premium – Coolant Temperature Sensor (Part No.WTA2369)

Coolant Temperature Sensor

from

$4.99
Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:


Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
  • OE precision matched thermistor ensuring Carquest sensors match OE output resistances across all temperature positions
  • O-rings, seals or thread sealant are included if required
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Extensive design validation testing and 100% end-of-line tested
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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Top-Selling T400 Steering and Chassis Parts

Shop now for the best auto parts and accessories for your 1984 T400, starting at $39.99, and ensure your Kenworth stays in top shape.

Carquest Premium – Hydraulic Filter: Protects Hydraulic Systems from Contaminants (Part No.85637)

Hydraulic Filter: Protects Hydraulic Systems from Contaminants

from

$39.99
Carquest Premium Hydraulic Filters protect your sensitive hydraulic systems by removing dirt, metal particles, and impurities from the hydraulic fluid. These filters prevent damage to pumps, valves, cylinders, and motors by eliminating harmful contaminants. By keeping the fluid clean, hydraulic filters help maintain optimal operating pressures and ensure smooth, reliable operation. Carquest Premium Hydraulic Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Conventional cartridge hydraulic filter
  • Made in USA
  • Inside-Out Flow Direction
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In-Demand Filters and PCVs for the Kenworth T400

Choose from 7 high-quality Filters and PCVs for your 1984 Kenworth T400 priced between $13.99 and $193.99.

Carquest Premium – Oil Filter: Removes Oil Contaminants for Superior Engine Protection (Part No.85515HD)

Oil Filter: Removes Oil Contaminants for Superior Engine Protection

from

$13.99
Carquest Premium Oil Spin-on Filters protect your engine by removing contaminants, such as dirt, metal particles, and sludge, from your engine oil. These filters effectively remove contaminants that can cause significant wear and damage to critical engine components. The spin-on design screws directly onto a mounting head, allowing for easy servicing and replacement. By keeping the oil clean, these filters help ensure proper lubrication and cooling, reduce friction and help extend engine life. Carquest Premium Oil Spin-on Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Contains Anti-Drainback Valve;8 PSID By-Pass Valve; Front End By-Pass Valve
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Carquest Premium – Oil Filter: Removes Oil Contaminants for Superior Engine Protection (Part No.85748)

Oil Filter: Removes Oil Contaminants for Superior Engine Protection

from

$92.99
Carquest Premium Oil Spin-on Filters protect your engine by removing contaminants, such as dirt, metal particles, and sludge, from your engine oil. These filters effectively remove contaminants that can cause significant wear and damage to critical engine components. The spin-on design screws directly onto a mounting head, allowing for easy servicing and replacement. By keeping the oil clean, these filters help ensure proper lubrication and cooling, reduce friction and help extend engine life. Carquest Premium Oil Spin-on Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Made in USA
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Carquest Premium – Oil Filter: Removes Oil Contaminants for Superior Engine Protection (Part No.85749)

Oil Filter: Removes Oil Contaminants for Superior Engine Protection

from

$54.99
Carquest Premium Oil Spin-on Filters protect your engine by removing contaminants, such as dirt, metal particles, and sludge, from your engine oil. These filters effectively remove contaminants that can cause significant wear and damage to critical engine components. The spin-on design screws directly onto a mounting head, allowing for easy servicing and replacement. By keeping the oil clean, these filters help ensure proper lubrication and cooling, reduce friction and help extend engine life. Carquest Premium Oil Spin-on Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Can be used with 89750 base.
  • Made in USA
  • Can be used with 89750 base.
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Carquest Premium – Air Filter: Superior Protection for Clean Engine Air Intake Systems (Part No.88883)

Air Filter: Superior Protection for Clean Engine Air Intake Systems

from

$158.99
Carquest Premium Air Filters ensure your equipment runs smoothly with our high-quality filtration media that prevents airborne contaminants, such as dust, dirt, and debris, from reaching your combustion chamber. Protecting critical engine components from wear and damage helps maintain optimal engine power, improve fuel efficiency, and extend engine life – keeping your equipment performing at its best. Carquest Premium Air Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Axial seal primary air filter
  • Made in USA
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Carquest Premium – Air Filter: Superior Protection for Clean Engine Air Intake Systems (Part No.88830)

Air Filter: Superior Protection for Clean Engine Air Intake Systems

from

$193.99
Carquest Premium Air Filters ensure your equipment runs smoothly with our high-quality filtration media that prevents airborne contaminants, such as dust, dirt, and debris, from reaching your combustion chamber. Protecting critical engine components from wear and damage helps maintain optimal engine power, improve fuel efficiency, and extend engine life – keeping your equipment performing at its best. Carquest Premium Air Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Axial seal primary air filter
  • Made in USA
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Carquest Premium – Oil Filter: Removes Oil Contaminants for Superior Engine Protection (Part No.85671)

Oil Filter: Removes Oil Contaminants for Superior Engine Protection

from

$48.49
Carquest Premium Oil Spin-on Filters protect your engine by removing contaminants, such as dirt, metal particles, and sludge, from your engine oil. These filters effectively remove contaminants that can cause significant wear and damage to critical engine components. The spin-on design screws directly onto a mounting head, allowing for easy servicing and replacement. By keeping the oil clean, these filters help ensure proper lubrication and cooling, reduce friction and help extend engine life. Carquest Premium Oil Spin-on Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Integral Post Seal
  • Made in USA
  • Includes Integral Post Seal
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Dorman – HD Solutions – Standard Engine Oil Drain Plug: 1-18 UNS Thread, 1.5 " Head, 1 Pack (Part No.090-5002CD)

Standard Engine Oil Drain Plug: 1-18 UNS Thread, 1.5 " Head, 1 Pack

from

$19.99
This engine oil drain plug is designed to match the fit and function of an original equipment plug on specified vehicles. It is engineered to replace a missing or damaged plug and help ensure a secure seal.

Product Features:
  • Direct replacement – this engine oil drain plug is designed to match the fit and function of an original equipment plug on specified vehicles
  • Ideal solution – engineered to replace a missing or damaged plug and help ensure a secure seal
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
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Highly-Rated Batteries and Chargers for 1984 Kenworth T400

Discover top-rated parts for your 1984 Kenworth T400, with an average 3.75 stars rating across 183 customer reviews.

DieHard HD Battery – Battery: 31T Group Size, 1 Year Warranty, 950 CCA, 1140 CA, 175 Minute Reserve Capacity (Part No.31S30)

Battery: 31T Group Size, 1 Year Warranty,  950 CCA,  1140 CA,  175 Minute Reserve Capacity

from

$174.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
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DieHard HD Battery – Battery: 31T Group Size, 1 Year Warranty, 1000 CCA, 1190 CA, 185 Minute Reserve Capacity (Part No.31HDS30)

Battery: 31T Group Size, 1 Year Warranty,  1000 CCA,  1190 CA,  185 Minute Reserve Capacity

from

$182.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
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Optima – Yellow Battery: 31T Group Size, 900 CCA, 1125 CA, 155 Minute Reserve Capacity, Deep-Cycle (Part No.D31T-1125)

Yellow Battery: 31T Group Size, 900 CCA, 1125 CA, 155 Minute Reserve Capacity, Deep-Cycle

from

$399.99
The OPTIMA YELLOWTOP high-performance AGM battery is the ULTIMATE POWER SOURCE and one of the few true dual-purpose automotive batteries available. With premium cranking power and impressive cycling capability, this heavy-duty battery is ideal for trucks with winches, vehicles with high-demand electronics and audio systems, commercial vehicles and heavy equipment. Key benefits of OPTIMA YELLOWTOP batteries include deep-cycling battery and OPTIMAL starting power, up to 3x longer service life, 15x more resistant to vibration, leak proof, mountable in virtually any position, maintenance-free, and more than 300 discharge / recharge cycles. OPTIMA YELLOWTOP batteries work well for tractors or forklifts.

Product Features:
  • Faster recharging capabilities
  • Maintenance free for maximum convenience
  • Completely non-spillable, mountable in many positions
  • 15x the vibration resistance of a standard flooded battery
  • Up to 3 times longer life vs. standard flooded batteries
  • SPIRALCELL TECHNOLOGY with 99.99% pure lead delivers more power and consistently outperforms conventional flat-plate batteries
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DieHard HD Battery – Battery: 31T Group Size, 1 Year Warranty, 825 CCA, 1000 CA, 200 Minute Reserve Capacity (Part No.NG31CS)

Battery: 31T Group Size, 1 Year Warranty,  825 CCA,  1000 CA,  200 Minute Reserve Capacity

from

$259.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
See More

DieHard HD Battery – Battery: 31T Group Size, 1 Year Warranty, 750 CCA, 935 CA, 180 Minute Reserve Capacity (Part No.31XS-30)

Battery: 31T Group Size, 1 Year Warranty,  750 CCA,  935 CA,  180 Minute Reserve Capacity

from

$149.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
See More

DieHard HD Battery – Battery: 6V Battery: 4 Group Size, 1 Year Warranty, 1000 CCA, 1250 CA (Part No.4-30)

Battery: 6V Battery: 4 Group Size, 1 Year Warranty,  1000 CCA,  1250 CA

from

$153.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
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Odyssey Battery – Extreme Series Battery: 31 Group Size, 1150 CCA, 1370 CA, 220 Minute Reserve Capacity (Part No.ODX-AGM31)

Extreme Series Battery: 31 Group Size, 1150 CCA, 1370 CA, 220 Minute Reserve Capacity

from

$544.99
You’ve got what it takes to push yourself further. To Drive harder. To endure the knocks and stay out longer. For all of you that are driven to such extremes, EnerSys builds the Odyssey battery. The first to feature advanced Thin Plate Pure Lead (TPPL) Technology, Odyssey batteries deliver twice the power and triple the life of any conventional lead acid battery. It’s the pure materials inside the Odyssey battery that make this performance possible.

Product Features:
  • MASSIVE STARTING POWER: Engine cranking pulses in excess of 2250 amps for five seconds
  • LONGER LIFE: 8 to 12 year design life and 3 to 10 year service life
  • EXTREME TEMPERATURE TOLERANCE: -40 Deg. F to 140 Deg. for models without a metal jacket, and from -40 Deg. to 176 Deg. for models with a metal jacket
  • VIBRATION RESISTANT: Extreme protection against high impact shocks and vibration
  • Odyssey Batteries are designed to be non-spillable and can be mounted in any position except inverted.
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Odyssey Battery – Performance Series Battery: 31 Group Size, 925 CCA, 1150 CA, 200 Minute Reserve Capacity (Part No.ODP-AGM31)

Performance Series Battery: 31 Group Size, 925 CCA, 1150 CA, 200 Minute Reserve Capacity

from

$450.99
You’ve got what it takes to push yourself further. To Drive harder. To endure the knocks and stay out longer. For all of you that are driven to such extremes, EnerSys builds the Odyssey battery. The first to feature advanced Thin Plate Pure Lead (TPPL) Technology, Odyssey batteries deliver twice the power and triple the life of any conventional lead acid battery. It’s the pure materials inside the Odyssey battery that make this performance possible.

Product Features:
  • MASSIVE STARTING POWER: Engine cranking pulses in excess of 2250 amps for five seconds
  • LONGER LIFE: 8 to 12 year design life and 3 to 10 year service life
  • EXTREME TEMPERATURE TOLERANCE: -40 Deg. F to 140 Deg. for models without a metal jacket, and from -40 Deg. to 176 Deg. for models with a metal jacket
  • VIBRATION RESISTANT: Extreme protection against high impact shocks and vibration
  • Odyssey Batteries are designed to be non-spillable and can be mounted in any position except inverted.
See More

DieHard HD Battery – Battery: 6V Battery: 5D Group Size, 1 Year Warranty, 880 CCA, 1100 CA (Part No.5D-30)

Battery: 6V Battery: 5D Group Size, 1 Year Warranty,  880 CCA,  1100 CA

from

$169.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
See More