GMC PM250 Engine Parts

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

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

The Edelbrock #5087 E-210 Cylinder heads are designed for use with 1955-1986 Small-Block Chevy applications. The Edelbrock E-Series cylinder heads are a step up in affordable performance from our E-Street line. They feature larger runners for increased ai

Product Features:

• Complete Pair For Mechanical Flat Tappet
• 64cc Combustion Chamber Volume
• 210cc Intake/75cc Exhaust Runner Volume
• 2.08 in. Intake/1.6 in. Exhaust Valve Diameter
• 0.562 in. Deck Thickness

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

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

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

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

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

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

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:

• Formulated for pre-lubrication cam lobes, lifters & engine bearings
• Increases load carrying capacity
• Holds fast to surfaces
• Exacting tolerances
• Meets or exceeds OEM specifications
• 4.0 oz. Squeeze Container

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

Product Features:

• Valve Cover Gasket

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

All Pro Series bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining, and are rated at 200,000 PSI tensile strength. ARP Pro Series head bolt kits are application specific, designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP zero defect zero failure quality standard. Hardened and parallel ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12 point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more stretch to compensate for the additional compression of gaskets.

Product Features:

• Pro Series Bolts Are Cold Forged To Ensure Molecular Integrity, Heat Treated Prior To Thread Rolling And Machining
• Nominally Rated At 200,000 Psi Tensile Strength
• These Fasteners Deliver Superior Strength And Meet The ARP Zero Defect Zero Failure Quality Standard
• Bolts Have A Reduced Wrenching Hex Or 12 Point Head And Wide Area Flange To Eliminate The Need For Valve Train Removal For Cylinder Head Retorquing And Permits The Use Of Larger Diameter Valve Springs

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

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 for the sealing repair environment
• Unsurpassed quality you can trust
• Validated for fit, form, and function

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

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

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

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:

• Valve Seats
• Performer Series
• 50-State Street Legal

There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting wind age trays and have specially designed standoff studs with serrated lock nuts to position the wind age tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat treated in-house to 200,000 Pounds Per Square Inch tensile strength, and precision J-form threads rolled after heat treat to create a fastener that has threads 1000 Percent stronger than others.

Product Features:

• Kit Come Complete With Hardened Parallel Ground Washers And High Quality Nuts
• Manufactured From 8740 Chrome Moly Steel
• Heat Treated To 200,000 Pounds Per Square Inch
• Precision J-Form Threads Rolled After Heat Treat To Create A Fastener That Has Threads 1000 Percent Stronger Than Others
• 200,000 PSI
• Sold As A Kit

Far superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under head radius and rolled threads for the utmost reliability. The threads are rolled after heat treating, which makes them about 1000 Percent longer fatigue life than most main bolts, which are threaded prior to heat treating. Available in the popular High Performance Series, which, at a nominal rating of 180,000 PSI, is a premium replacement for OEM fasteners, or the 200,000 PSI nominal rated Pro Series, application specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel ground, hardened washers are included with each kit.

Product Features:

• Forged From Premium Grade 8740 Chrome Moly Steel
• Generous Under Head Radius And Rolled Threads For The Utmost Reliability
• Threads Are Rolled After Heat Treating, Which Makes Them About 1000 Percent Longer Fatigue Life Than Most Main Bolts, Which Are Threaded Prior To Heat Treating
• Parallel Ground, Hardened Washers Are Included With Each Kit
• Large Journal
• Sold As A Kit
• 180,000 PSI

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