1978 GMC K25 Engine Parts

Essential 1978 GMC K25 Engine Parts

Felpro – Engine Gasket Set (Part No.KS 2619)

Engine Gasket Set

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$51.99
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
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Includes all parts needed to complete the repair
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Cloyes Gear – Engine Timing Camshaft Gear (Part No.2524)

Engine Timing Camshaft Gear

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$37.99
Along with the timing chain, tensioners, and guides, sprockets are an integral component within the timing system. Timing gears and sprockets are available as part of complete timing kits as well as for individual purchase and installation

Product Features:
  • Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain gears offer reliability and dependability for engine rebuilds and typical replacement jobs
  • Helical tooth form for quiet operation and precision machined bore for true fit
  • CAD designed and manufactured using premium materials to ensure optimal performance
  • Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
  • Refer to our online catalog for detailed application-specific information
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Factory Air – O-Ring & Gasket A/C System Seal Kit (Part No.26739)

O-Ring & Gasket A/C System Seal Kit

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$6.79
High quality OE replacement part with all components needed to complete the job

Product Features:
  • All the seals needed to complete the job
  • Compatible with both R12 and R134a refrigerants
  • Application specific
  • SUV and rear air applications
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Imperial – Engine Oil Cooler (Part No.241046)

Engine Oil Cooler

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$259.99
Product Features:
  • Imperial Swirl-Cool« engine oil cooler kit
  • Size: 1-1/2″ x 6-1/2″ x 18″
  • Heavy-duty applications
  • Chevrolet V8 applications
  • Size: 1.5 in. x 6.5 in. x 18 in.
  • Heavy duty applications
  • Specifically designed for Chevrolet V8 applications with metal line kit for easier installation
  • Two-pass design for increased cooling
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Mr. Gasket – Billet Style Aluminum Crankshaft Pulley (Part No.5317)

Billet Style Aluminum Crankshaft Pulley

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$103.99
The machined aluminum pulley has been heat treated for strength and has a satin finish.

Product Features:
  • Made from aluminum
  • Heat treated for strength
  • Satin finish for a more subtle hi-tech look than chrome
  • Matches water pump pulley #5315
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Sealed Power – Engine Exhaust Valve (Part No.V-1904)

Engine Exhaust Valve

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$6.49
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
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Melling – Stock Replacement Type Oil Pump Repair Kit (Part No.K-55)

Stock Replacement Type Oil Pump Repair Kit

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$47.49
Melling oil pump repair kits are provided to supply the parts needed to rebuild a specific individual oil pump. Melling kits include all the required parts needed for a quality oil pump rebuild. Although Melling recommends the installation of a new oil pump, Melling oil pump repair kits are the preferred choice when a rebuilder has the desire to reuse the original oil pump casting or front timing cover.

Product Features:
  • Includes components needed to rebuild a worn oil pump providing an alternative to purchasing a new oil pump
  • Components are manufactured from high quality materials for durable wear
  • Components are precision engineered for optimum fit and function
  • Designed for long-life and worry-free performance
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Sealed Power – Engine Crankshaft Main Bearing Set (Part No.4124MA)

Engine Crankshaft Main Bearing Set

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$69.99
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:
  • A-Series bi-metal aluminum alloy
  • Greater seizure resistance than tri-metal material
  • Reduces dramatically or eliminates bearing wear
  • Exacting tolerances
  • Meets or exceeds OEM specifications
  • Made with silicon to provide greater surface hardness
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Edelbrock – Sure Seat Valve Springs (Part No.5825)

Sure Seat Valve Springs

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$147.99
The Edelbrock #5825 Replacement Sure Seat Valve Spring for Edelbrock #5085, 60759, 60909, 60719, 60739, 60999, 60899 & 79899 cylinder heads are made of highest quality spring wire and precision wound to close tolerances.

Product Features:
  • Non-Rotator Type
  • 1.460 in. Outer Diameter
  • Made In The USA
  • Single Coil Spring Type
  • Set of 16
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ARP Auto Racing – For Use With Chevy Big Block, Hex Style Head, Black Oxide, Chrome Moly (Part No.135-3603)

For Use With Chevy Big Block, Hex Style Head, Black Oxide, Chrome Moly

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$149.99
High Performance head bolts are available with a reduced wrenching hex or 12 point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 PSI (which is 15 Percent stronger than Grade 8) and kits come complete with hardened parallel ground washers.

Product Features:
  • High Performance Head Bolts Are Available With A Reduced Wrenching Hex Or 12 Point
  • Wide Area Flanged Head That Eliminates The Need For Valve Train Removal To Facilitate Cylinder Head Retorquing
  • Rated At 180,000 PSI Tensile Strength
  • High Performance Head Bolts Are Stronger
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Edelbrock – Performer-Plus Hydraulic Flat Tappet Lifters (Part No.9738)

Performer-Plus Hydraulic Flat Tappet Lifters

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$127.99
Product Features:
  • Replacement Lifters For Performer Cam
  • 50 State Legal
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Melling – Engine Oil Priming Tool (Part No.PT13)

Engine Oil Priming Tool

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$71.99
Melling Engine Oil Priming Tools were developed as a way for engine builders to safely pre-prime the engine with oil prior to the initial engine startup. The Priming tool, with the use of a standard drill circulates oil to all of the critical areas of the new engine quickly and safely.

Product Features:
  • Priming tool circulates oil through critical areas of a new engine before engine start up
  • Manufactured from high quality materials for consistent durable wear
  • Precision engineered for optimum fit and function
  • Designed for long-life and worry-free performance
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Felpro – Engine Gasket Set (Part No.FS 8510 PT)

Engine Gasket Set

from

$87.99
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:
  • Full Sets contain all the gaskets and seals necessary for a complete engine overhaul
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered for the sealing repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
  • Validated for fit, form, and function
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Felpro – OIL COOLER GASKET MOUNTING SET (Part No.ES 72671)

OIL COOLER GASKET MOUNTING SET

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$15.99
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
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Includes all parts needed to complete the repair
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Mr. Gasket – Woodruff Key (Part No.984G)

Woodruff Key

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$30.19
Short style. The offset cam and crankshaft key is another method to increase torque and horsepower within the operating range you select.

Product Features:
  • Increases Low-End Torque
  • Increases Mid-Range Horsepower
  • Reduces Low-End Torque
  • Increases Top-End Horsepower
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Mr. Gasket – Engine Oil Pan (Part No.9425)

Engine Oil Pan

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$108.99
This Mr. Gasket Oil Pan comes natural unfinished steel and includes the drain plug, washers & bolts. Original equipment style with stock depth and capacity. Oil pan gasket, dipstick and tube sold separately.

Product Features:
  • Small Block Chevy 283-350 1955-’79
  • Drivers Side Dipstick
  • OEM Style – Stock Depth & Capacity
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Mr. Gasket – Oil Filler Tube (Part No.2066)

Oil Filler Tube

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$20.99
Chrome-plated steel oil filler tube. Works with Mr. Gasket’s matching #2063 Oil Filler Cap with PCV fitting.

Product Features:
  • Chrome plated steel filler tube is 7-3/4″ overall length
  • Fits Mr. Gasket breather #2063
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Felpro – OIL PUMP MOUNTING GASKET SET (Part No.71012)

OIL PUMP MOUNTING GASKET SET

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$3.29
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
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Sealed Power – Engine Oil Pump Screen (Part No.224-1246)

Engine Oil Pump Screen

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$14.49
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:
  • Manufactured to fit a specific application
  • Provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system
  • It is recommended that a new properly installed oil pump pick-up tube/screen be a part of every oil pump installation
  • Oil pump screen assemblies are manufactured under strict quality guidelines
  • Utilizes ISO & QS certified manufacturing
  • 5/8″ Inlet tube
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National – Shaft Repair Sleeve (Part No.99233)

Shaft Repair Sleeve

from

$30.99
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:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-2555A 10X2)

Engine Connecting Rod Bearing Set

from

$74.99
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:
  • Additional oversize OD allows for cost-effective reconditioning
  • A-Series bi-metal aluminum alloy
  • Greater seizure resistance than tri-metal material
  • Dramatically reduces or eliminates bearing wear
  • Made with silicon to provide greater surface hardness
  • Silicon particles help polish crankshaft journal to further reduce wear during operation
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Edelbrock – Valve Seat for B/B Chevy heads with 2.19" Valves (Part No.9716)

Valve Seat for B/B Chevy heads with 2.19" Valves

from

$22.99
Product Features:
  • 2.19 in.
  • Ductile Iron Material
  • Intake
  • Sold Individually
  • Made In The USA
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Felpro – PUSH ROD COVER GASKET SET (Part No.PS 13315 C)

PUSH ROD COVER GASKET SET

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
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Melling – Stock Replacement Oil Pump Drive Gear (Part No.DG-62C)

Stock Replacement Oil Pump Drive Gear

from

$42.49
Melling offers a replacement oil pump drive gear for several Jeep and GM applications. This gear should be replaced should the original gear show ware or be damaged or lost during the rebuilding process.

Product Features:
  • Manufactured from high quality materials for consistent durable wear
  • Precision engineered for optimum fit and function
  • Designed for long-life and worry-free performance
  • Meets or exceeds original equipment specifications
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Crankshaft Rebuilders – Remanufactured Crankshaft Kit (Part No.12450)

Remanufactured Crankshaft Kit

from

$369.99
Remanufactured precision machined OE crankshafts.

Product Features:
  • Includes matching rod and main bearings.
  • Journals Micropolished.
  • All units subject to complete quality inspection.
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Spartan – Engine Complete Assembly; Chev 350 Vortec Drop-In Engine (Part No.HP99C)

Engine Complete Assembly; Chev 350 Vortec Drop-In Engine

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$4309.99
The perfect replacement engine without breaking the bank for your worn out SBC. The Vortec engines had better flowing Cylinder Heads matched with a Hyd. Roller Camshaft that make for a reliable combination with a little extra Go.
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Felpro – OIL PAN GASKET SET (Part No.OS 30126 C-1)

OIL PAN GASKET SET

from

$22.49
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:
  • DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
  • ENGINEERED TO PERFORM — Proprietary cork-rubber formulation
  • SUPERIOR SEAL — Highly conformable to accommodate for the imperfect sealing surfaces
  • EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
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Edelbrock – SuprChrg (Part No.1551)

SuprChrg

from

$3552.99
SuprChrg

Popular 1978 GMC K25 Engine Parts Categories

1978 GMC K25 Engine Parts

You count on your 1978 GMC K25 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Engine Parts. With 630 Engine Parts ranging in price from $0.30 to $9,081.99, you’re sure to find everything you need for your 1978 GMC K25.

Brands matter. If you want to shop a specific Engine Parts brand, we stock 24 different brands like Sealed Power, Felpro, and Melling. 1978 GMC K25 Engine Parts start as low as $0.30!

One of the best ways to find top quality OEM or aftermarket Engine Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 4,172 extensive product reviews on 1978 GMC K25 Engine Parts. Some of the top-rated Engine Parts products we carry are Engine Valve Cover Gasket Set with 4.8 stars and Oil Pan Gasket Set: PermaDryPlus Rigid Carrier Includes Bolts & Snap-Ups®, 41 Piece with 4.6 stars.

Did we mention you can order your Engine Parts from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Engine Parts inventory for your 1978 GMC K25 below to get started!

Top-Rated Engine Parts Brands For Your 1978 GMC K25

Trusted Engine Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1978 GMC K25 running right for years to come. In our inventory you’ll find brands like Sealed Power, Felpro, Melling, and even more.

Popular Anchor Engine Parts

You’ll find popular Anchor brand products across Engine Mounts. All are waiting to get your 1978 GMC K25 back on the road. Some of the top-rated Anchor products in these categories are:
Engine Mount: Front Left, Front Right, 1 Piece
from $13.49
(18)
Engine Mount: Front Left, Front Right, 1 Piece
Engine Mounts

FAQs for 1978 GMC K25 Engine Parts

What are the most purchased Engine Parts for the 1978 GMC K25?

Out of 630 Engine Parts for the 1978 GMC K25, the most popular in our inventory are:
Engine Valve Lifter
from $13.99
(15)
Engine Valve Lifter
Engine Valve Lifters
Engine Push Rod
from $2.99
(5)
Engine Push Rod
Push Rods
Engine Cylinder Head Bolt Set
from $31.99
(38)
Engine Cylinder Head Bolt Set
Cylinder Head Bolt Sets

What are the top-rated 1978 GMC K25 Engine Parts?

Top-rated Engine Parts for your 1978 GMC K25 based on customer reviews/ratings are:
Engine Valve Cover Gasket Set
from $25.99
(45)
Engine Valve Cover Gasket Set
“Satisfied”
TIMING COVER GASKET SET
from $19.99
(24)
TIMING COVER GASKET SET
“Good”