GMC 300 Engine Parts

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Essential GMC 300 Engine Parts

Imperial – Engine Oil Cooler (Part No.241040)

Engine Oil Cooler

from

$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
  • All except Chevrolet V8 applications
  • Universal Cooler, NOT a direct OE replacement. User to determine fitment prior to installation
  • Heavy duty applications
  • All except Chevrolet V8 applications
  • Universal Cooler, NOT a direct OE replacement. User to determine fitment prior to installation
  • Heavy duty applications
  • All except Chevrolet V8 applications
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Competition Cams – HYDRAULIC LIFTER SET, SBC/BBC 1 ST (Part No.812-16)

HYDRAULIC LIFTER SET, SBC/BBC 1 ST

from

$115.99
High Energy Hydraulic lifters have a patented constant orifice metering valve that precisely meters oil to the rocker arms. Continuous contact between the metering valve and pushrod seat is maintained, eliminating excessive oiling at high engine speeds. The pushrod seat is made of a special powdered metal iron alloy that is heat-treated for strength and wear resistance.In addition, High Energy Lifters have a lightweight check valve disc that allows for quicker response, which results in increased engine speed before valve float. This check valve disc also maintains added control at all engine speeds and loads.COMP Cams High Energy Hydraulic Lifters also contain a longer piston than conventional hydraulic lifters, which provides more load bearing surface and increases lifter longevity.

Product Features:
  • .842″ diameter; 94g weight; 1.99″ seat height
  • Patented orifice metering valve precisely meters oil to the rocker arms
  • Continuous contact between metering valve and hardened pushrod seat is maintained, eliminating excessive oiling at high engine speeds
  • Contain a longer piston than conventional hydraulic lifters, which provides more load bearing surface and increases lifter longevity
  • Lightweight check valve disc allows for quicker response and maintains added control at all engine speeds and loads
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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
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Felpro – Engine Oil Pan Gasket Set – Blue Stripe cork-rubber (Part No.OS 6412 C)

Engine Oil Pan Gasket Set - Blue Stripe cork-rubber

from

$14.99
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:
  • 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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ARP Auto Racing – For Use With Chevy Small Block, Hex Head, Black Oxide, Chrome Moly (Part No.230-7001)

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

from

$8.99
you have probably heard many a horror story about someone losing an engine when the oil pump fell off into the pan because of a broken bolt. Well, you can put your mind at ease when using ARP premium grade oil pump bolt and stud kits. You have a choice of black oxide finished 8740 chrome moly steel or low maintenance stainless steel. Both are nominally rated at 170,000 PSI tensile strength to provide you with plenty of clamping force. Moreover, take your pick between conventional hex style or 12 point designs. This is insurance that no conscientious engine builder should be without The studs come with flat washers and nuts, while the Ford bolt kit has flat washers only. These inexpensive fasteners can literally save your engine.

Product Features:
  • Nominally Rated At 170,000 Psi Tensile Strength To Provide You With Plenty Of Clamping Force
  • Premium Grade Oil Pump Stud
  • The Studs Come With Flat Washers And Nuts
  • Black Oxide Finished 8740
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Edelbrock – Timing Cover SBC Stamped Steel W/Welded Star & Logo Chrome (Part No.4860)

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

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$34.99
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
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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

from

$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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National – Engine Harmonic Balancer Repair Sleeve (Part No.88176)

Engine Harmonic Balancer Repair Sleeve

from

$18.79
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:
  • Made of stainless steel
  • Designed to prevent timing cover seal leaks
  • Takes up gaps caused by worn-out harmonic balancer shafts
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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

from

$19.99
Product Features:
  • Valve Seats
  • Performer Series
  • 50-State Street Legal
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ARP Auto Racing – ARP Cylinder Head Stud Kit (Part No.234-4301)

ARP Cylinder Head Stud Kit

from

$321.99
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
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Edelbrock – Sure Seat Valve Springs for Ford 429/460 V8 1969-1987 (Part No.5767)

Sure Seat Valve Springs for Ford 429/460 V8 1969-1987

from

$117.99
Complete kit includes retainers and locks. Springs made of highest quality spring wire. Springs precision wound to close tolerances. Includes superior quality steel retainers. Includes 7 degree heat-treated valve stem locks. Retainers and locks black oxide coated. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:
  • For Use With Cast Iron Heads
  • Springs Made of Highest Quality Spring Wire
  • Springs Precision Wound To Close Tolerances
  • Use with Original Equipment Heads Only
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Felpro – Engine Valve Cover Load Spreader Set (Part No.ES 72676)

Engine Valve Cover Load Spreader Set

from

$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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Sealed Power – Engine Piston Ring Set (Part No.E-240X 30)

Engine Piston Ring Set

from

$56.99
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:
  • Unsurpassed quality that you can trust
  • Uses leading edge materials
  • State-of-the-art manufacturing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
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Holley – Valve Covers – Muscle Series – Finned – SBC – Satin Black Machined (Part No.241-135)

Valve Covers - Muscle Series - Finned - SBC - Satin Black Machined

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$487.99
Product Features:
  • Designed to fit all 1958-86 Small Block Chevy engines with perimeter bolt patterns
  • Die-Cast aluminum construction ensures high detail and reduces the opportunity for warping of the valve cover flange and oil leaks
  • Standard height valve cover with pre-installed internal oil baffles
  • Factory style twist-in oil fill cap, round Holley emblem, and square oil fill and PCV grommets included
  • Available in four finishes to best suit your custom build: natural, polished, gloss black, factory orange
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Felpro – Exhaust Pipe Flange Gasket (Part No.9097)

Exhaust Pipe Flange Gasket

from

$2.99
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 for the sealing repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
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National – Shaft Repair Sleeve (Part No.99212)

Shaft Repair Sleeve

from

$41.99
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
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ARP Auto Racing – For Use With Chevy Small Block, Black Oxide, Chrome Moly, With Washers (Part No.134-3601)

For Use With Chevy Small Block, Black Oxide, Chrome Moly, With Washers

from

$136.99
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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Mr. Gasket – Oil Dipstick And Tube (Part No.6235)

Oil Dipstick And Tube

from

$18.79
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
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Edelbrock – Victor-Link Adjustable True-Roller Timing Chain Set (Part No.7880)

Victor-Link Adjustable True-Roller Timing Chain Set

from

$178.99
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
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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.
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Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-1555CPA 20)

Engine Connecting Rod Bearing Set

from

$66.99
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
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MAHLE Original – Engine Timing Cover Seal (Part No.65022)

Engine Timing Cover Seal

from

$15.99
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

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

Engine Cylinder Head Gasket Set

from

$89.99
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:
  • Head sets contain gaskets and seals necessary for a valve grind or head reconditioning job
  • Application specific design to ensure a perfect fit and premium seal
  • Premium quality parts you can trust
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Contains all the parts needed to complete the repair unless otherwise noted
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Felpro – Engine Gasket Set (Part No.FS 7613 SH-2)

Engine Gasket Set

from

$127.99
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:
  • 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
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Edelbrock – Valve Cover Gasket Set for Chevrolet (Part No.7549)

Valve Cover Gasket Set for Chevrolet

from

$37.99
Product Features:
  • Valve Cover Gasket
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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 133 aftermarket and OEM Engine Parts for your GMC 300, ranging from $0.43 to $1,886.00.

We offer parts from 14 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 463 reviews of GMC 300 Engine Parts from previous customers. Some of the top rated parts include Econo-Kool® Engine Oil Cooler with 4.7 stars and VALVE COVER GASKET SET with 5.0 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 14 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.
We have Competition Cams parts available for your GMC 300 in categories like Valve Cover and Cylinder Heads. Some of the top-rated Competition Cams parts in these categories are:
Lifters, Sbc/Bbc Pro Magnum Hyd 1 St
from $572.99
(1)
Lifters, Sbc/Bbc Pro Magnum Hyd 1 St
Engine Valve Lifters

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 $17.99
(15)
Multi-Purpose Seal
Crankshaft Seals
Engine Harmonic Balancer Repair Sleeve
from $18.79
(5)
Engine Harmonic Balancer Repair Sleeve
Timing Cover Repair Sleeves
Shaft Repair Sleeve
from $36.49
(1)
Shaft Repair Sleeve
Main Bearing Repair Sleeves

FAQs for GMC 300 Engine Parts

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

Out of 133 Engine Parts for the GMC 300, the most popular in our inventory are:
Oil Dipstick And Tube
from $18.79
(11)
Oil Dipstick And Tube
Engine Oil Dipsticks
Engine Valve Lifter
from $9.99
(1)
Engine Valve Lifter
Camshaft Followers
Rubber Expansion Plug 1-7/8 In. - Size Range 1-7/8 In. - 2 In.
from $8.99
This product is not rated
Rubber Expansion Plug 1-7/8 In. – Size Range 1-7/8 In. – 2 In.
Rubber Freeze Plugs

What are the top-rated GMC 300 Engine Parts?

Top-rated Engine Parts for your GMC 300 based on customer reviews/ratings are:
Econo-Kool® Engine Oil Cooler
from $122.99
(3)
Econo-Kool® Engine Oil Cooler
“Good price perfect fit had all the parts I needed good quality”
VALVE COVER GASKET SET
from $30.99
(2)
VALVE COVER GASKET SET
“Perfect Seal, good quality, easy installation”
Rubber Expansion Plug 1-3/8" - Size Range 1-3/8" - 1-1/2" (Sold by each)
from $18.99
(2)
Rubber Expansion Plug 1-3/8" – Size Range 1-3/8" – 1-1/2" (Sold by each)
“These worked great for making a skidoo secondary clutch tool.”