GMC 300 Engine Parts

Essential GMC 300 Engine Parts

Felpro – Cylinder Head Gasket: Fiber-Faced Composite, Without Head Bolts (Part No.7391 S)

Cylinder Head Gasket: Fiber-Faced Composite, Without Head Bolts

from

$40.99
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:
  • Application specific design to ensure a perfect fit
  • Unsurpassed quality you can trust
See More

ARP Auto Racing – For Use With Chevy Small Block, 13/16" Socket Size, 2.470" Under Head L (Part No.234-2501)

For Use With Chevy Small Block, 13/16" Socket Size, 2.470" Under Head L

from

$34.99
As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 Pounds Per Square Inch bolts that let you exert maximum clamping force. Special features comes with 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.

Product Features:
  • Ultra Strong Bolt Rated At 200,000 Pounds Per Square Inch
  • 1/4 Inch Thick, Wide Area Washer And An Extra Tall 12 Point Head That Accepts A Deep Socket And Eliminates The Worry Of Stripping The Head
  • Delivers ARP Quality And Reliability
  • Made In USA
  • Sold Individually
  • 7/16″-20 RH Thread Size
  • 2.47″ Underhead Length
  • 200,000 PSI
See More

MAHLE Original – Fuel Pump Gasket (Part No.D27094)

Fuel Pump Gasket

from

$1.99
MAHLE gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:
  • All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
  • MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
  • MAHLE gaskets is the leader in Domestic, Asian and European applications
  • The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
See More

Edelbrock – Sure Seat Valve Springs (Part No.5825)

Sure Seat Valve Springs

from

$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
See More

Felpro – Engine Valve Stem Oil Seal Set (Part No.SS 5112)

Engine Valve Stem Oil Seal Set

from

$15.49
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:
  • RIGHT TYPE — Valve stem seals designs are application-specific for the repair occasion using either deflector (umbrella) seals, O-ring style or positive seals
  • QUALITY MATERIALS — Each valve stem seal features materials based on the specific application for your vehicle repair
  • ENGINEERING EXPERTISE — Parts are reviewed, validated and approved by Fel-Pro engineers through rigorous research, development and testing
  • INSTALLATION AID — Installation tool included to protect inner lip of seal from damage during seal installation
  • COVERAGE — Available for domestic and foreign nameplate vehicles
See More

Sealed Power – Engine Connecting Rod Bearing (Part No.9845CP 10)

Engine Connecting Rod Bearing

from

$25.49
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:
  • Steel-backed bronze alloy lining with overplate
  • Popular for fatigue resistance & strength
  • Provides conformability required for older apps
  • Our standard material is comparable to competitors performance bearing
  • Note – This material offers less resistance to wear & corrosion than other materials.
  • Utilizes ISO & QS certified manufacturing
See More

Sealed Power – Engine Push Rod (Part No.RP-3028)

Engine Push Rod

from

$2.49
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.
See More

ARP Auto Racing – ARP Cylinder Head Stud Kit (Part No.234-4301)

ARP Cylinder Head Stud Kit

from

$316.99
ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated for superior to “aircraft” quality alloy steels. Secondly, each stud is placed vertically into special racks and precisely heat-treated to 200,000 psi for the 8740 material and 220,000 psi for the ARP2000 material. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. 

Product Features:
  • 1/2″ 12-Point, 3/16″ Allen Socket Size(s)
  • 8740 Chromoly
  • Black Oxide
  • Small Block Chevy
  • Sold As A Kit
See More

Edelbrock – Victor-Link Adjustable True-Roller Timing Chain Set (Part No.7880)

Victor-Link Adjustable True-Roller Timing Chain Set

from

$169.99
Product Features:
  • Keyway Adjustable
  • Double Roller Timing Chain Type
  • Induction Hardened Billet Steel Material
  • 9-Keyway Setting Points
  • For Chevys Opperating in 6500-8500 RPM Range
See More

Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-54A)

Stock Replacement Type Oil Pump Intermediate Shaft

from

$14.29
A new Melling oil pump shaft is recommended to complete every new oil pump install. Melling offers a complete line of high quality shafts for domestic and import pump applications. A new oil pump shaft is necessary due to possible metal fatigue, cracking

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
See More

Edelbrock – Performer-Plus Camshaft Kit for 1957-86 Small-Block Chevrolet (Part No.2102)

Performer-Plus Camshaft Kit for 1957-86 Small-Block Chevrolet

from

$287.99
Product Features:
  • Designed for Optimum Torque and Acceleration
  • Maximum Performance From Idle through Mid-Range
  • Matched to Edelbrock Performer Intakes
  • Includes Hydraulic Lifters and Assembly Lube
  • Major Improvement in Throttle Response and Torque
  • Use For Daily Drivers/Trucks/Vans/RVs/4x4s
  • Take The Guesswork Out Of Camshaft Selection
See More

National – Shaft Repair Sleeve (Part No.99176)

Shaft Repair Sleeve

from

$46.49
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:
  • 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
See More

Edelbrock – Rollin’ Thunder Camshaft for 1957-86 Small-Block Chevy 283-400 V8 (Part No.2201)

Rollin' Thunder Camshaft for 1957-86 Small-Block Chevy 283-400 V8

from

$441.99
Product Features:
  • Hydraulic roller tappet style camshaft
  • Reduces friction and eliminates break-in problems
  • Reduces friction and eliminates break-in problems
  • Permit higher valve velocities for increased performance
  • Maintains good manifold vacuum and drivability
See More

Victor Reinz – Engine Timing Cover Seal (Part No.19-10358-01)

Engine Timing Cover Seal

from

$29.49
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:
  • Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
See More

Dorman – Steel Cup Expansion Plug 13.70mm, Height 0.180 (sold by each) (Part No.555-007)

Steel Cup Expansion Plug 13.70mm, Height 0.180 (sold by each)

from

$1.29
This engine expansion plug 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 engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug 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
See More

Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-1555CPA)

Engine Connecting Rod Bearing Set

from

$69.99
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:
  • Steel-backed bronze alloy lining with overplate
  • Popular for fatigue resistance & strength
  • Provides conformability required for older apps
  • Our standard material is comparable to competitors performance bearing
  • Note – This material offers less resistance to wear & corrosion than other materials.
  • Utilizes ISO & QS certified manufacturing
See More

Edelbrock – Timing Cover SBC Stamped Steel W/Welded Star & Logo Chrome (Part No.4860)

Timing Cover SBC Stamped Steel W/Welded Star & Logo Chrome

from

$32.99
Edelbrock part #4860 S/B Chevy Chrome Timing Cover (with Welded Reinforcement Plate) This stamped steel timing covers for small-block Chevrolet has a reinforcement plate welded to the inside of the cover for added strength. This timing cover is ideal for

Product Features:
  • Stamped Steel Material
  • Comes W/ Front Crankshaft Seal Installed
  • W/ Welded Reinforcement Plate
  • Chrome Finish
  • Ideal For Preventing Camshaft Walk When Used W/ Thrust Button
See More

Felpro – Cylinder Head Gasket Set (Part No.HS 7391 S-4)

Cylinder Head Gasket Set

from

$77.99
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:
  • Head sets contain gaskets and seals necessary for a valve grind or head reconditioning job
  • Contains all the parts needed to complete the repair unless otherwise noted
  • Contains all the parts needed to complete the repair unless otherwise noted
See More

Sealed Power – Engine Valve Spring Retainer Keeper (Part No.VK-115)

Engine Valve Spring Retainer Keeper

from

$0.43
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:
  • Unsurpassed quality that you can trust
  • Uses leading edge materials
  • State-of-the-art manufacturing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
See More

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

$59.99
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
See More

Felpro – TIMING COVER GASKET SET (Part No.TCS 45114)

TIMING COVER GASKET SET

from

$21.49
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:
  • Timing cover set includes gaskets and seals necessary for timing chain/belt replacement job
  • 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
See More

Felpro – Rear Main Seal Set (Part No.BS 13044-2)

Rear Main Seal Set

from

$9.49
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:
  • Application specific design to ensure a perfect fit
  • Meets or exceeds all original equipment specifications
  • Engineered and manufactured specifically for repair applications
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
See More

Imperial – Engine Oil Cooler (Part No.241046)

Engine Oil Cooler

from

$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
See More

Mr. Gasket – Oil Dipstick And Tube (Part No.6235)

Oil Dipstick And Tube

from

$16.49
Mr. Gasket Oil Dipstick is similar in design to original equipment, it can be installed with simple hand tools.

Product Features:
  • Fits Chevy Small Block 1955-79 283-400 CID
  • Block Mounted
  • Chrome Plated Steel
See More

Felpro – Engine Gasket Set (Part No.FS 7613 SH-2)

Engine Gasket Set

from

$121.99
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
See More

Helping You Find the Right Engine Parts for Your GMC 300

You love your 300. So we’ve made it easier than ever to help you find GMC 300 Engine Parts in our online catalog. Our inventory holds 94 aftermarket and OEM Engine Parts for your GMC 300, ranging from $0.43 to $3,552.99.

We offer parts from 12 brands trusted to make quality Engine Parts for your GMC 300. Before you buy, take some time to read through customer reviews. We currently have 472 reviews of GMC 300 Engine Parts from previous customers. Some of the top rated parts include Performer-Plus Camshaft Kit for 1957-86 Small-Block Chevrolet with 3.8 stars and Econo-Kool® Engine Oil Cooler with 4.7 stars.

Find your 300 Engine Parts here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your GMC 300 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 300

Our inventory holds Engine Parts for your GMC 300 from 12 trusted brands. You’ll find OEM and aftermarket parts from brands like National, Felpro, and Sealed Power, all of which can keep that GMC happy.

Top-Rated National Engine Parts

Leading National Engine Parts

We carry National brand parts for your GMC 300 across several catalog categories, including Engine Internals and Engine Timing Parts. Some of our most reviewed National parts include:
Multi Purpose Seal
from $12.99
(15)
Multi Purpose Seal
Crankshaft Seals
Engine Harmonic Balancer Repair Sleeve
from $18.99
(5)
Engine Harmonic Balancer Repair Sleeve
Timing Cover Seals

FAQs for GMC 300 Engine Parts

What are the most purchased Engine Parts for the GMC 300?

Out of 94 Engine Parts for the GMC 300, the most popular in our inventory are:
Oil Dipstick And Tube
from $16.49
(11)
Oil Dipstick And Tube
Engine Oil Dipsticks
Engine Valve Lifter
from $9.79
(1)
Engine Valve Lifter
Engine Valve Lifters
VALVE COVER GASKET SET
from $29.99
(2)
VALVE COVER GASKET SET
Valve Cover Gaskets

What are the top-rated GMC 300 Engine Parts?

Top-rated Engine Parts for your GMC 300 based on customer reviews/ratings are:
Performer-Plus Camshaft Kit for 1957-86 Small-Block Chevrolet
from $287.99
(4)
Performer-Plus Camshaft Kit for 1957-86 Small-Block Chevrolet
“I love this cam it gives me the power I need at the low end to pull havey loads where I need it the most for the work I do with my truck This cam and ”
Econo-Kool® Engine Oil Cooler
from $141.99
(3)
Econo-Kool® Engine Oil Cooler
“Good price perfect fit had all the parts I needed good quality”
Rear Main Seal Set
from $9.49
(3)
Rear Main Seal Set
“Do not try to use this in a buick 401. It is way to large in diameter. It will not hammer flat enough to work. Would give no stars if possible. Felpr”