Flat Tappet Set

COMP Cams® introduces a high-quality yet affordable alternative to hard-to-find traditional iron flat-tappet lifters for popular solid and hydraulic flat-tappet applications. The new Xtreme Energy™ Diamond-Like Carbon (DLC) coated flat-tappet lifters feature a DLC surface treatment, producing a flat-tappet lifter with an extremely hard, tough, and slick face that reduces friction at the cam lobe. This coating also extends the life of the lifter and camshaft, significantly reducing the likelihood of a flattened cam lobe. DLC-coated lifters are compatible with all steel and cast-iron camshafts and have been durability tested on a Spintron, simulating entire racing seasons with outstanding results. Available for Chevrolet, Buick, Cadillac, Pontiac, Oldsmobile, Ford, Chrysler, and AMC applications requiring flat tappets and are available as singles or I4/I6/V6/V8 sets.

Additional Information

Tappet features a Diamond-Like Coating (DLC) face that forms an extremely hard, tough and high-lubricity surface to reduce friction at the Cam lobe/lifter interface, extending lifter and Camshaft life significantly.

Part Type

Engine Valve Tappet

Product Overview

Comp Cams GM Applications Xtreme Energy DLC Hydraulic Flat Tappet Lifter .842in Dia. - 4 Cyl

• Delivers sustained, high-stability performance under race-level thermal and mechanical loads.
• Diamond-Like Carbon coating provides an extremely hard, slick, low-friction surface that dramatically reduces wear and friction between the lifter/cam lobe, improving durability and reliability in high-load performance applications.
• Fully compatible with all cast-iron and steel camshafts, ensuring stable surface interaction, controlled contact stress, and dependable performance across both OEM and high-load performance valvetrain materials.
• Validated through rigorous endurance and load-cycle testing, these lifters are engineered with geometry and surface-finish characteristics that promote controlled contact stress during flat-tappet camshaft break-in.

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Product Details

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Lifters, Hydraulic Flat Tappet, 0.842 in. Diameter, 2.000 in. Lifter Seat Height, Chevy, Buick, Cadillac, Pontiac, Set of 8

COMP Cams Xtreme Energy DLC hydraulic flat tappet lifters are quality yet inexpensive performance-proven lifters available in hydraulic and solid for multiple applications. These tappets feature a Diamond-Like Coating (DLC) face that forms an extremely hard, tough, and high-lubricity surface to reduce friction at the cam lobe/lifter interface, extending lifter and camshaft life significantly. The lifters maintain the excellent performance expected of a COMP product and are available for Chevrolet, Buick, Cadillac, Pontiac, Oldsmobile, Ford, Chrysler, and AMC applications requiring flat tappets.

Additional details:
• DLC: Diamond-Like Carbon
• Wear-resistant
• High lubricity
• Cast-iron and steel camshaft compatible
• Outstanding performance in Spintron durability testing simulation of an entire racing season
• Excellent alternative to hard-to-find standard lifters