SKU #: CC-CCTAPPETS-4BT MPN #: CCTAPPETS-4BT

Colt Cams Tappets 4BT Cummins

Name: Colt Cams Tappets 4BT Cummins
Brand: Colt Cams
Price: 109.65 USD
Availability: InStock

$109.65$129.00

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

Description

Upgrade the valvetrain of your 4BT Cummins with Colt Cams Tappets, designed specifically for 4BT applications. These heavy-duty tappets feature a 1.30-inch diameter, compared to the 1.10-inch diameter found on many 4BT tappets, helping spread the pressure between the camshaft and tappet across a larger contact area. The increased contact area makes these tappets an excellent choice for 4BT engines equipped with performance camshafts. They are an ideal complement to the Colt Cams Stage 3 Camshaft for 4BT Cummins and are designed to provide a robust foundation for a performance-oriented valvetrain. Why Use Larger 4BT Tappets? Performance camshafts can place increased demands on the valvetrain. Colt Cams designed these 4BT tappets with a 1.30-inch diameter to provide a larger contact surface between the cam and tappet. Compared with many 1.10-inch 4BT tappets, the larger diameter helps spread the pressure over a wider area, making these tappets well suited to performance-oriented engine builds. Ideal for 4BT Performance Builds These tappets are a natural match for a performance 4BT valvetrain. When paired with a Colt Cams performance camshaft and appropriate pushrods, they provide an upgraded foundation for engines being built for increased performance, towing, competition, or demanding industrial applications. Break-In Procedure When installing new tappets with a flat-tappet camshaft, proper break-in is critical. Apply cam lube to all cam lobes and tappet faces, and oil the bearing journals and tappet barrels before assembly. Before starting the engine, always turn it over by hand to verify proper clearances and cam timing. 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 recommends using an appropriate zinc-based additive during initial flat-tappet camshaft break-in. Important: Always verify tappet, camshaft, pushrod, and engine compatibility before installation. Follow the camshaft manufacturer's recommended break-in procedure when installing new tappets.

Why Use Larger 4BT Tappets?

Performance camshafts can place increased demands on the valvetrain. Colt Cams designed these 4BT tappets with a 1.30-inch diameter to provide a larger contact surface between the cam and tappet. Compared with many 1.10-inch 4BT tappets, the larger diameter helps spread the pressure over a wider area, making these tappets well suited to performance-oriented engine builds.

Ideal for 4BT Performance Builds

These tappets are a natural match for a performance 4BT valvetrain. When paired with a Colt Cams performance camshaft and appropriate pushrods, they provide an upgraded foundation for engines being built for increased performance, towing, competition, or demanding industrial applications.

Break-In Procedure

When installing new tappets with a flat-tappet camshaft, proper break-in is critical. Apply cam lube to all cam lobes and tappet faces, and oil the bearing journals and tappet barrels before assembly.

Before starting the engine, always turn it over by hand to verify proper clearances and cam timing. 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 recommends using an appropriate zinc-based additive during initial flat-tappet camshaft break-in.

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

Vehicle Fitment

Dodge Ram 4BT Cummins

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FEATURES & BENEFITS:

Designed specifically for 4BT Cummins engines
1.30" tappet diameter
Larger contact area than many 1.10" 4BT tappets
Helps distribute pressure between the camshaft and tappet over a wider surface area
Ideal for use with performance camshafts
Excellent choice for 4BT engine builds and valvetrain upgrades
Sold as a set

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.