1955 GMC M300 Engine Parts

Essential 1955 GMC M300 Engine Parts

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

Engine Push Rod

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$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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ARP Auto Racing – For Use With Small/ Big Block Chevy, Hex Head, Black Oxide, With Nuts/ Washers (Part No.230-7003)

For Use With Small/ Big Block Chevy, Hex Head, Black Oxide, With Nuts/ Washers

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$7.29
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
  • Hi-Volume
  • 3.125″
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Sealed Power – Engine Piston Ring Set (Part No.E-240K 30)

Engine Piston Ring Set

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$102.99
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:
  • Face of top rings coated with latest generation Plasma-Moly
  • Decreases friction
  • Very resistant to scuffing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
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Mr. Gasket – Mls Head Gasket (Part No.3128G)

Mls Head Gasket

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$114.99
Our unique Multi-Layered steel head gasket embossment formation process optimizes the embossment radius, reduces stress points, enhances gasket conformability, and provides uniform clamp load distribution. This all results in superior surface contact between block and cylinder head. All head gasket layers/spacers go through an additional process to significantly reduce forming induced stress. Advantages are reduced brittleness in material, increased flexibility and deformation retention. This stabilizes the gasket, resulting in reduced cylinder bore distortion and improved combustion seal fro the extreme cylinder pressures found in high compression, supercharged and turbocharged applications. A proprietary polymer coating ensures the micro-seal of engine coolant and oil fluids. A typical MLS head gasket requires a smoother (30Ra) surface finish than composite head gaskets. Mr. Gasket’s proprietary polymer coating will seal a surface finish twice as rough (60Ra) as a typical MLS head gasket. For high performance street, drag race and oval track use.

Product Features:
  • Gasket bore – 4.035 inch: Compressed thickness – .040 inch
  • Manufactured from 3-layer premium grade stainless steel and state of the art laser cutting
  • Optimized sealing embossments seals extreme cylinder pressure
  • Provides excellent stability and reduces cylinder bore distortion.
  • Proprietary polymer coating ensures the micro seal of engine coolant and oil fluids.
  • Ideal for supercharged, turbocharged, nitrous oxide and extreme compression ratio engines
  • For high-performance street, drag race and oval track use
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Dorman – Steel Cup Expansion Plug 9/16 In., Height 0.250 (sold by each) (Part No.555-008)

Steel Cup Expansion Plug 9/16 In., Height 0.250 (sold by each)

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$0.99
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
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Edelbrock – Victor-Link Adjustable True-Roller Timing Chain Set (Part No.7880)

Victor-Link Adjustable True-Roller Timing Chain Set

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

Cylinder Head Gasket Set

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$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
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Dorman – Rubber Expansion Plug 1-3/8 In. – Size Range 1-3/8 In. – 1-1/2 In. (sold by each) (Part No.570-008)

Rubber Expansion Plug 1-3/8 In. - Size Range 1-3/8 In. - 1-1/2 In. (sold by each)

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$3.99
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
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Felpro – OIL PAN GASKET SET (Part No.OS 30191 C-3)

OIL PAN GASKET SET

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$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:
  • 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 With Standard 2 Piece Cork Gasket (Part No.234-1802)

For Use With Chevy Small Block With Standard 2 Piece Cork Gasket

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$37.49
The engineers at ARP spent quite a bit of time developing these highly effective, unique oil pan studs. They are designed to make it as easy as possible to install a pan and seal it properly. You will note that the studs have a radiused bullet nose that serves to locate the pan rails, then allow the nuts to be easily installed without the worry of cross threading. For those who prefer bolts, ARP got you covered, too. Both are available in black oxide finished chrome moly steel or rust proof stainless steel. Also, you may choose between conventional hex style or the space saving 12 point nuts. The stud kits come complete with a special locking flanged nut, while the bolt kits come with washers.

Product Features:
  • Designed To Make It As Easy As Possible To Install A Pan And Seal It Properly
  • Bolt Kits Come With Washers
  • Stud Kits Come Complete With A Special Locking
  • Easily Installed Without The Worry Of Cross-Threading
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Imperial – Econo-Kool® Engine Oil Cooler (Part No.240459)

Econo-Kool® Engine Oil Cooler

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$141.99
Product Features:
  • Imperial Econo-Kool« engine oil cooler kit
  • Size: 3/4″ x 7-1/2″ x 12-1/2″
  • Light-duty applications
  • All except Chevrolet V8 applications
  • Size: 3/4 in. x 7-1/2 in. x 12-1/2 in.
  • Light duty applications
  • All except Chevrolet V8 applications
  • Lightweight construction with high-efficiency turbulators
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ARP Auto Racing – For Use Wit 2003 And Earlier Gen Iii/Ls Series Smal Block, Hex Head, Chrome Moly (Part No.134-3609)

For Use Wit 2003 And Earlier Gen Iii/Ls Series Smal Block, Hex Head, Chrome Moly

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$249.99
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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Driveworks – Oil Seal (Part No.S-9845)

Oil Seal

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$7.29
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Victor Reinz – Fuel Pump Mounting Gasket (Part No.71-13599-00)

Fuel Pump Mounting Gasket

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$2.79
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.
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ARP Auto Racing – ARP Cylinder Head Stud Kit (Part No.234-4301)

ARP Cylinder Head Stud Kit

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$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
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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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$18.99
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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Felpro – Engine Valve Cover Gasket Set (Part No.VS 3460 A)

Engine Valve Cover Gasket Set

from

$19.29
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:
  • 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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Sealed Power – Engine Connecting Rod Bearing (Part No.1555CPA 10)

Engine Connecting Rod Bearing

from

$13.99
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 – TIMING COVER SEAL (Part No.65022)

TIMING COVER SEAL

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

Oil Dipstick And Tube

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$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
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National – Shaft Repair Sleeve (Part No.99176)

Shaft Repair Sleeve

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$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
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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
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Edelbrock – E-CNC Small-Block Chevy 64cc Cylinder Head Hydraulic Flat Tappet Cam (Part No.79899)

E-CNC Small-Block Chevy 64cc Cylinder Head Hydraulic Flat Tappet Cam

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$873.99
The Edelbrock part #79899 Small Block Chevy E-CNC cylinder heads offer the ultimate performance. These cylinder heads are fully CNC ported for maximum horsepower and torque, making them ideal for high-performance’s street and racing applications. They als

Product Features:
  • Complete Single For Hydraulic Flat Tappet
  • 64cc Combustion Chamber Volume
  • 185cc Intake/75cc Exhaust Runner Volume
  • 2.02 in. Intake/1.6 in. Exhaust Valve Diameter
  • 0.562 in. Deck Thickness
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ARP Auto Racing – ARP Rocker Arm Stud Kit (Part No.234-7201)

ARP Rocker Arm Stud Kit

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$99.99
ARP rocker studs are concentric within .005″, extra-large radius base offers greater resistance to flex. Note: To be used ONLY with ARP’s patented Perma-Loc adjusters. Made of 8740 chrome moly forgings and heat-treated to 180,000 PSI. Tip ground flush for optimum adjuster seating.

Product Features:
  • 7/16″-14 Thread Size(s)
  • .700″ Thread Length
  • 8740 Chromoly
  • 1.75″ Effective Stud Length
  • Set of 16
  • .800″ Adjuster Thread Depth
  • 3/8″-24 Shank Diameter and Thread
  • 3/8″ Typical Small Block Application
  • Black Oxide
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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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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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$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
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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
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1955 GMC M300 Engine Parts

You count on your 1955 GMC M300 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 63 Engine Parts ranging in price from $0.43 to $1,575.99, you’re sure to find everything you need for your 1955 GMC M300.

Brands matter. If you want to shop a specific Engine Parts brand, we stock 12 different brands like National, Felpro, and Mr. Gasket. 1955 GMC M300 Engine Parts start as low as $0.43!

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 67 extensive product reviews on 1955 GMC M300 Engine Parts. Some of the top-rated Engine Parts products we carry are Econo-Kool® Engine Oil Cooler with 4.7 stars and Engine Valve Spring Retainer Keeper with 5.0 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 1955 GMC M300 below to get started!

Top-Rated Engine Parts Brands For Your 1955 GMC M300

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 1955 GMC M300 running right for years to come. In our inventory you’ll find brands like National, Felpro, Mr. Gasket, and even more.

Popular Dorman Engine Parts

You’ll find popular Dorman brand products across Engine Timing Parts. All are waiting to get your 1955 GMC M300 back on the road. Some of the top-rated Dorman products in these categories are:

Top-Rated National Engine Parts


If National are what you’re looking for, our inventory holds plenty. We stock National brand Engine Parts for your 1955 GMC M300, and 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 1955 GMC M300 Engine Parts

What are the most purchased Engine Parts for the 1955 GMC M300?

Out of 63 Engine Parts for the 1955 GMC M300, the most popular in our inventory are:
Oil Dipstick And Tube
from $16.49
(11)
Oil Dipstick And Tube
Engine Oil Dipsticks
VALVE COVER GASKET SET
from $29.99
(2)
VALVE COVER GASKET SET
Valve Cover Gaskets
Oil Seal
from $7.29
(2)
Oil Seal
Crankshaft Seals

What are the top-rated 1955 GMC M300 Engine Parts?

Top-rated Engine Parts for your 1955 GMC M300 based on customer reviews/ratings are:
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”
Engine Valve Spring Retainer Keeper
from $0.43
(2)
Engine Valve Spring Retainer Keeper
“I would purchase again”
Ultra-Cool Engine Oil Cooler Kit
from $167.99
(1)
Ultra-Cool Engine Oil Cooler Kit
“Purchased for a 2005 Yukon XL Denali. Exceeded expectations for an aftermarket product”