SKU #: CC-CCTAPPETS MPN #: CCTAPPETS

Colt Cams Tappets 89-26 Dodge Ram 5.9L/6.7L Cummins

Name: Colt Cams Tappets 89-26 Dodge Ram 5.9L/6.7L Cummins
Brand: Colt Cams
Price: 136.0 USD
Availability: InStock

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Colt Cams Tappets 89-26 Dodge Ram 5.9L/6.7L Cummins

Description

Upgrade the valvetrain in your 5.9L or 6.7L Cummins with Colt Cams Custom-Designed Tappets. Engineered specifically for Cummins applications, these tappets feature a maximized crown designed to promote proper tappet rotation and provide a more consistent contact surface between the tappet and camshaft. Colt Cams developed these tappets after identifying inconsistencies in the crown profiles of many tappets currently available on the market. Some aftermarket tappets can have crowns that are too flat or even dished, which can negatively affect the rotation required for proper valvetrain operation. Colt addressed this issue by using measurements similar to standard Cummins tappets while maximizing the crown. Why Tappet Crown Matters The tappet's crown plays an important role in maintaining proper rotation as it contacts the camshaft. Colt Cams designed these tappets with a maximum crown profile to help ensure consistent rotation during engine operation. This is particularly important when installing a performance camshaft where proper tappet-to-cam contact is critical. Application 5.9L/6.7L Cummins These tappets are designed for Cummins applications and are an excellent complement to Colt Cams performance camshafts. Verify engine and camshaft compatibility before installation. Break-In Procedure When used with a flat-tappet camshaft, proper break-in is critical. Apply cam lube to all cam lobes and tappet faces, and oil the appropriate bearing journals and lifter barrels before assembly. Always turn the engine over by hand before starting it to verify clearances and proper timing location. Colt Cams recommends starting the engine and running it at approximately 1,800–2,000 RPM for 18–20 minutes. Because modern engine oils may contain reduced levels of anti-scuff additives, Colt Cams also recommends using an appropriate zinc-based additive during flat-tappet camshaft break-in. Important: Always verify proper tappet, camshaft, and engine compatibility before installation. Follow the camshaft manufacturer's recommended break-in procedure when installing new tappets with a new camshaft.

Why Tappet Crown Matters

The tappet's crown plays an important role in maintaining proper rotation as it contacts the camshaft. Colt Cams designed these tappets with a maximum crown profile to help ensure consistent rotation during engine operation. This is particularly important when installing a performance camshaft where proper tappet-to-cam contact is critical.

Application

5.9L/6.7L Cummins

These tappets are designed for Cummins applications and are an excellent complement to Colt Cams performance camshafts. Verify engine and camshaft compatibility before installation.

Break-In Procedure

When used with a flat-tappet camshaft, proper break-in is critical. Apply cam lube to all cam lobes and tappet faces, and oil the appropriate bearing journals and lifter barrels before assembly. Always turn the engine over by hand before starting it to verify clearances and proper timing location.

Colt Cams recommends starting the engine and running it at approximately 1,800–2,000 RPM for 18–20 minutes. Because modern engine oils may contain reduced levels of anti-scuff additives, Colt Cams also recommends using an appropriate zinc-based additive during flat-tappet camshaft break-in.

Important: Always verify proper tappet, camshaft, and engine compatibility before installation. Follow the camshaft manufacturer's recommended break-in procedure when installing new tappets with a new camshaft.

Vehicle Fitment

1989 - 2026 Dodge Ram 5.9L/6.7L Cummins

WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov

FEATURES & BENEFITS:

Designed specifically for 5.9L and 6.7L Cummins engines
Custom-designed by Colt Cams
Maximized convex crown promotes proper tappet rotation
Designed to address inconsistent crown profiles found in some aftermarket tappets
Maintains dimensions similar to standard Cummins tappets while maximizing crown profile
Ideal for use with Colt Cams performance camshafts
Suitable for Cummins engine rebuilds and valvetrain upgrades

About Colt Cams

Colt Cams develops high-performance camshafts and valvetrain components for diesel enthusiasts who demand more from their engines. With a focus on performance-driven camshaft profiles for Cummins and Ford Powerstroke engines, Colt Cams combines extensive research and development with real-world dyno testing to create camshafts designed around the needs of today's diesel performance builds.

Rather than simply modifying existing camshaft profiles, Colt Cams has invested heavily in developing application-specific grinds. Their research has included dyno testing more than 50 combinations of camshaft durations, lobe separations, and installation centerlines to determine profiles that deliver meaningful improvements in airflow, efficiency, drivability, and performance.

Performance Camshafts for Cummins & Powerstroke

Colt Cams offers performance camshafts for some of the most popular diesel platforms, including 5.9L and 6.7L Cummins, 4BT Cummins, 7.3L Powerstroke, and 6.0L/6.4L Powerstroke engines. Whether you're building a daily-driven truck, tow rig, work truck, or dedicated performance engine, Colt Cams offers profiles ranging from mild drop-in upgrades to aggressive competition-oriented camshafts.

Popular Cummins options include the Stage 3 "Big Stick," Stage 4, and Stage 5 camshafts. The Stage 3 "Big Stick" is designed to provide strong mid-range torque and horsepower while maintaining low-end response and drivability, while the more aggressive Stage 4 and Stage 5 profiles are designed for higher-performance applications.

Engineered for Real-World Performance

A camshaft is one of the most important components in determining how an engine breathes and where it makes power. Colt Cams focuses on optimizing valve timing to improve the movement of air and exhaust gases through the engine. Depending on the application and camshaft profile, these improvements can contribute to better turbocharger response, reduced exhaust gas temperatures, improved efficiency, and increased power potential.

Colt Cams also pays close attention to durability. Their performance camshafts are engineered for demanding diesel applications, with profiles developed around the specific characteristics of each engine platform rather than relying on a one-size-fits-all approach.