GMC K25 Engine Parts

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Essential GMC K25 Engine Parts

Mr. Gasket – Chrome Valve Cover Wing Bolts (Part No.9824)

Chrome Valve Cover Wing Bolts

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$18.99
Chrome-plated for beauty and durability, wing bolts make valve cover removal fast & easy. They are precision-engineered and feature extra-long threads to accommodate Mr. Gasket re-usable valve cover gasket & custom valve covers.

Product Features:
  • Fits Chevy V8
  • Standard Y Top 1/4 In-20 X 5/8 in L
  • Chrome Plated Steel
  • Overall Length: 4.64″
  • Installed Length: 4.00″
  • Pack of 4
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Competition Cams – Super Valve Locks, 11/32" 1 St (Part No.611-16)

Super Valve Locks, 11/32" 1 St

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$479.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights

Product Features:
  • For simplicity, any Super Lock fits any COMP Cams 10° retainer – just choose the correct lock for you valve size and application
  • Super Locks are recommended in all race applications
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Melling Select Performance – Oil Pump Screen Mounting Kit (Part No.M-55085)

Oil Pump Screen Mounting Kit

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$6.99
Melling always suggests that a new properly installed oil pump pick-up tube/screen be a part of every oil pump installation. Melling offers an oil pump screen mounting kit for the 10552ST and 10555ST series high performance pumps. The oil pump screen mounting kit contains everything needed for a fast, easy and quality screen installation including the tool and hardware needed to complete the installation.
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Imperial – Engine Oil Cooler (Part No.241046)

Engine Oil Cooler

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$248.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

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
  • 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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Sealed Power – Engine Piston Ring Set (Part No.E-243K)

Engine Piston Ring Set

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$81.99
Sealed Power« Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.

Product Features:
  • Face of top rings are coated with latest generation Plasma-Moly
  • Decreases friction
  • Very resistant to scuffing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
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ARP Auto Racing – For Use With All Chevy Small Blocks, 8740 Steel, 190000 Psi (Part No.134-7901)

For Use With All Chevy Small Blocks, 8740 Steel, 190000 Psi

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$24.99
Many an engine has been destroyed as a result of oil pump driveshaft failure. To cure this all too common problem, ARP has designed an extra heavy duty shaft that will provide you with the necessary reliability. The shaft is made from heat treated, premium grade aerospace chrome moly steel. Moreover, the shaft diameter is a larger diameter than the OEM unit. These features combine to enable ARP shafts to handle the added torque requirements of increased capacity oil pumps or heavy viscosity lubricants.

Product Features:
  • Extra Heavy Duty Shaft That Will Provide The Necessary Reliability
  • Enable Shafts To Handle The Added Torque Requirements Of Increased Capacity Oil Pumps Or Heavy Viscosity Lubricants
  • Made From Premium Grade 8740 And Heat Treated To 190,000 Psi
  • Alignment Sleeve Is Roll Formed Onto The Shaft (Not Welded Or Pinned), Enabling The Sleeve To Float, Allowing For Slight Misalignment
  • Black Oxide
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Melling Select Performance – Valve Train Set Up Spring (Part No.VTSS100)

Valve Train Set Up Spring

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$12.99
Melling Performance valvetrain checking springs feature a low-tension design that allows them to be installed by hand for measuring piston-to-valve clearance, rocker arm ratio, and degreeing in a camshaft.
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Felpro – Engine Oil Pump Gasket (Part No.71012)

Engine Oil Pump Gasket

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$3.49
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:
  • 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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Felpro – Engine Valve Cover Load Spreader Set (Part No.ES 72676)

Engine Valve Cover Load Spreader Set

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$34.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

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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Melling – Stock Replacement Engine Assembly Lubricant (Part No.M-10012G)

Stock Replacement Engine Assembly Lubricant

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$113.99
Product Features:
  • Superior Wear Protection – Formulated with extreme pressure additives to protect engine components from metal-to-metal contact during initial startup
  • High Tackiness – Stays in place during assembly and storage, ensuring consistent lubrication exactly where it’s needed
  • Broad Compatibility – Safe for use with all engine components including camshafts, lifters, bearings, and valve train parts
  • Easy Startup Support – Reduces friction and prevents dry starts by providing instant lubrication during first engine fire-up
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Felpro – Engine Timing Cover Gasket Set (Part No.TCS 45265)

Engine Timing Cover Gasket Set

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$32.99
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
  • Validated for fit, form, and function
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Edelbrock – Valve Seat for S/B Chevy heads with 1.60" Valves (Part No.9710)

Valve Seat for S/B Chevy heads with 1.60" Valves

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$19.99
Product Features:
  • Valve Seats
  • Performer Series
  • 50-State Street Legal
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Felpro – Engine Oil Pump Shaft Retainer (Part No.72665)

Engine Oil Pump Shaft Retainer

from

$3.29
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

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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Mr. Gasket – Chrome Plated Steel Crankshaft Pulley (Part No.4961G)

Chrome Plated Steel Crankshaft Pulley

from

$96.99
Replace your stock black engine pulleys with a pair of chrome plated steel pulleys from Mr. Gasket. The pulleys are highly polished then chrome plated for lasting beauty. Designed for big block Chevy 396,402,427,454 engines with 5/8 inch water pump shaft.

Product Features:
  • Highly Polished For Lasting Beauty
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Sealed Power – Engine Piston Set (Part No.H423DCP)

Engine Piston Set

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$18.99
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:
  • Hypereutectic
  • Made with exclusive FM425 material for excellent strength & scuff resistance – allows tighter bore and improves sealing for less blow-by
  • Sophisticated “barrel” profiles help optimize oil wedge between skirt and wall.
  • Piston skirts protected by next-gen DUROSHIELD coating.
  • TAC ring groove geometry
  • Weight matched to +/- 2 grams.
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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 Rocker Arm Kit (Part No.R-826)

Engine Rocker Arm Kit

from

$3.49
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:
  • Complete rocker arm assembly
  • 1 Arm
  • 1 Ball
  • 1 Nut
  • Utilizes ISO & QS certified manufacturing
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Sealed Power – Engine Push Rod (Part No.RP-3181)

Engine Push Rod

from

$2.49
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:
  • State-of-the-art manufacturing
  • Exceptional material quality
  • Exacting tolerances
  • Heat treated tips
  • Stock or mild modified replacement
  • Made in USA
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ARP Auto Racing – 1.75"Oal Stud, 0.8"D Adjuster Third, 3/8"-24, 7/16"-14, 0.7"D Screw-In, Set Of 16 (Part No.134-7101)

1.75"Oal Stud, 0.8"D Adjuster Third, 3/8"-24, 7/16"-14, 0.7"D Screw-In, Set Of 16

from

$98.99
If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in, you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. ARP rocker studs are concentric within 0.005 T.I.R. thread pitch to thread pitch. They run in straight and true. Lengths are exact designed to provide positive seating every time. An extra large radius base offers greater resistance to flex. Available in both High Performance and Pro Series models. To be used with ARP patented Perma Loc(TM) adjusters.

Product Features:
  • Made Of 8740 Chrome Moly Forgings
  • Heat Treated To 180,000 PSI
  • Excellent For Elapsed Time Bracket Racing, Limited Rule Oval Track Competition And Street Use
  • Lengths Are Exact Designed To Provide Positive Seating Every Time
  • Set of 16
  • .800″ Adjuster Thread Length
  • 3/8-24 Shank Diameter and Thread
  • 3/8″ Typical Small Block Application
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Edelbrock – Sure Seat Valve Springs for Cylinder Heads (Part No.5745)

Sure Seat Valve Springs for Cylinder Heads

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$190.99
Product Features:
  • Non-Rotator Type
  • 1.550 in. Outer Diameter
  • 0.805 in. Inner Diameter
  • Dual Coil Spring Type
  • Set of 16
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Holley – GM LS Swap Oil Pan – 4WD / Truck / Off-Road – Black (Part No.302-4BK)

GM LS Swap Oil Pan - 4WD / Truck / Off-Road - Black

from

$529.99
Product Features:
  • Provides OE Style fitment – OE oil filter mounting, OE oil cooler port provision, OE flange gasket and sealing, proper structural rigidity, and OE bell-housing attachments
  • Traditional high-quality cast aluminum appearance with clean exterior styling
  • Complete kit including sump baffle, pick-up tube, pick-up o-ring, oil filter stud, & oil passage cover.
  • Fits GM K10 and other LS Swapped 4-wheel drive applications
  • Maximum crankshaft stroke – 4.00-inches
  • Compatible with hinged-door baffle No. 302-33 and rock shield No. 302-35 which can be added at any time
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Mr. Gasket – Precision Timing Tape (Part No.1588)

Precision Timing Tape

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$25.99
Precision timing tape can be used on a factory balancer to create HP through accurate timing, and makes setting valve lash simple.

Product Features:
  • 6 3¿4″ diameter
  • 6 3┐4″ diameter
  • 305, 350 cu. in. 1969-93
  • Increased Performance
  • Set Valve Lash At Proper Time
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Cloyes Performance – High Performance Timing Chain (Part No.9-135)

High Performance Timing Chain

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$72.99
High Performance 3/8″ Pitch Double Roller Replacement TRUE Roller Chain. 0.250″ Roller Diameter. Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness. Pre-stressed to Increase Fatigue Life.

Product Features:
  • A timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing of the engines valve events for each cylinder
  • Our chains are engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
  • From stock replacement to high performance, Cloyes has the most complete timing chain catalog
  • Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
  • Cloyes recommends the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced as these components play a vital role in system stability and accurate timing
  • Refer to our online catalog for detailed application-specific information
  • Keep your engines valvetrain in perfect time with Cloyes, the world leader in timing drive systems
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Competition Cams – Magnum 224/224 Hydraulic Flat Cam and Lifter Kit (Part No.CL12-212-2)

Magnum 224/224 Hydraulic Flat Cam and Lifter Kit

from

$305.99
SMALL BLOCK CHEVY HYDRAULIC CAM AND LIFTER KIT – Magnum: Great for street machines. Needs 2200+ stall, headers and gears. Rough idle.

Product Features:
  • Cam and lifter kit for Small Block Chevy engines
  • CL-Kit includes cam, lifters, assembly lube, instructions and decals
  • HYDRAULIC – Magnum: Great for street machines. Needs 2200+ stall, headers and gears. Rough idle.
  • 280/280 Advertised Duration, 230/230 Duration @ .050″, .480″/.480″ Lift, 110 Lobe Separation
  • Valve spring upgrade required
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Competition Cams – Xtreme Energy 206/212 Hydraulic Roller Cam and Lifter Kit (Part No.CL12-408-8)

Xtreme Energy 206/212 Hydraulic Roller Cam and Lifter Kit

from

$1152.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts.

Product Features:
  • Excellent performance in street carbureted applications.
  • More vacuum allows an increase in duration for improved performance and assists power brakes.
  • Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
  • Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.
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GMC K25 Engine Parts Categories

Helping You Find the Right Engine Parts for Your GMC K25

You love your K25. So we’ve made it easier than ever to help you find GMC K25 Engine Parts in our online catalog. Our inventory holds 916 aftermarket and OEM Engine Parts for your GMC K25, ranging from $0.30 to $9,081.99.

We offer parts from 28 brands trusted to make quality Engine Parts for your GMC K25. Before you buy, take some time to read through customer reviews. We currently have 11,461 reviews of GMC K25 Engine Parts from previous customers. Some of the top rated parts include Engine Valve Cover Gasket Set with 4.8 stars and Engine Oil Pan Gasket Set – PermaDryPlus rigid carrier, Oil Pan SnapUps Included with 4.6 stars.

Find your K25 Engine Parts here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your GMC K25 part to confirm it’s just right? You can find your nearest Advance Auto Parts store and confirm they have the part in stock before heading over.

Top Engine Parts Brands for Your GMC K25

Our inventory holds Engine Parts for your GMC K25 from 28 trusted brands. You’ll find OEM and aftermarket parts from brands like Sealed Power, Felpro, and Melling, all of which can keep that GMC happy.

Top-Rated Spartan Engine Parts

Leading Spartan Engine Parts

We carry Spartan brand parts for your GMC K25 across several catalog categories, including Remanufactured Engines. Some of our most reviewed Spartan parts include:
Engine Long Block; Chevrolet 400 70-78 Engine
from $2619.99
(1147)
Engine Long Block; Chevrolet 400 70-78 Engine
Remanufactured Engines
Engine Long Block; Chevrolet 350 64-85 H.P. Mid-Drss
from $4158.99
(32)
Engine Long Block; Chevrolet 350 64-85 H.P. Mid-Drss
Remanufactured Engines
Engine Long Block; Chevrolet 350 4 BLT 325HP Base
from $3114.99
(6)
Engine Long Block; Chevrolet 350 4 BLT 325HP Base
Remanufactured Engines

FAQs for GMC K25 Engine Parts

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

Out of 916 Engine Parts for the GMC K25, the most popular in our inventory are:
Engine Valve Lifter
from $13.99
(15)
Engine Valve Lifter
Camshaft Followers
Engine Push Rod
from $3.29
(5)
Engine Push Rod
Push Rods
Engine Cylinder Head Bolt Set
from $32.99
(38)
Engine Cylinder Head Bolt Set
Cylinder Head Bolt Sets

What are the top-rated GMC K25 Engine Parts?

Top-rated Engine Parts for your GMC K25 based on customer reviews/ratings are:
Engine Valve Cover Gasket Set
from $26.99
(45)
Engine Valve Cover Gasket Set
“Good fit”
Engine Oil Pan Gasket Set - PermaDryPlus rigid carrier, Oil Pan SnapUps Included
from $42.99
(38)
Engine Oil Pan Gasket Set – PermaDryPlus rigid carrier, Oil Pan SnapUps Included
“So easy to install and re-useable. Worth the little extra over the 4-piece gasket set.”
TIMING COVER GASKET SET
from $20.99
(24)
TIMING COVER GASKET SET
“Perfect match”