Cummins Camshafts & Cam Kits

Straight Key Factory Replacement

$14.95

Straight Camshaft Key for 6BT Cummins (’89–’25) Ensure a secure, precision fit for your 6BT Cummins camshaft with this Straight Key, compatible with 1989–2019model years....

Hamilton Cams Flat Tappet Conversion - 6.7L Cummins

2019-2024 6.7 Cummins Flat Tappet Conversion Kit™

$3,399.00

This kit replaces the problematic factory hydraulic roller lifters and camshaft to a reliable flat tappet. It is 49 state certified. We are confident it would pass CARB testing, but we don't do business in California. This kit will fit and is emission certified for all Ram 2019-2024 2500 and 3500 diesels not in California. It comes with - 178/208 Forged camshaft - DLC coated steel tappets - upgraded pushrods - Adjustable rocker arms with DLC coated trunnions See link for install kit from DNR customs! DNR Cam Removal Tray With Complete Removal/Install Kit for 19+ Cummins - DNRcustoms.com People have noticed an increase in spool up and throttle response, fuel economy gains and EGT reductions, all on stock vehicles with OEM tuning and all emission equipment present. Click on the description tab below for more information. For installation help, see the Qualified Installers section in the full product description below.

24 Valve 178/208 Camshaft Combo

$1,299.00

This 178/208 combo brings together the camshaft, heavy-duty pushrods, 103 lb valve springs and tappets for 1998.5–2018 24-valve Cummins engines. The grind is aimed at low-RPM response; installation still requires the clearance checks and break-in procedure below.

178/208 Cast Cam

$625.00

The 178/208 cast camshaft is intended for towing and low-RPM Cummins applications, with a listed operating range from idle to 4,000 RPM. Check the piston-to-valve clearance requirements for your engine before installation. Review the full cam specifications, break-in instructions and required supporting parts below.

24 Valve 188/220 Camshaft Combo

$1,349.00

The 24-valve 188/220 combo includes the camshaft, heavy-duty pushrods, 103 lb valve springs and tappets. For a VP44 truck, our application guidance points to the 24-valve 178/208 combo; read the turbo and clearance notes below before choosing.

12 Valve 188/220 Camshaft Combo

$1,375.00

This 12-valve combo pairs the 188/220 cam with 155 lb valve springs, retainers, locks, tappets and extreme duty pushrods. Review the clearance requirements before ordering, especially if the head or block has been machined.

12 Valve 178/208 Camshaft Combo

$1,375.00

Built around the 178/208 grind for low-RPM response, this combo is for 1989–1998 12-valve Cummins engines. It includes extreme duty pushrods, 155 lb springs, retainers, locks and tappets. Check the clearance and break-in instructions below.

188/220 Steel Cam

$699.00

The steel 188/220 cam is listed for drag-strip and stock-class pulling applications. It requires at least two bushings in the cam tunnel, plus the piston-to-valve clearance checks detailed below.

2003-2018 OEM Replacement camshaft

$499.00

For 2003–2018 5.9L and 6.7L Cummins engines needing stock cam timing, this replacement keeps the original lift and duration at .050-inch lift. It requires Hamilton Cams 1.45-inch lifters; follow the oil requirements below.

220-240-110LSA steel camshaft

$799.00

220/240/110LSA Steel Camshaft – Built for Extreme Performance, Not Daily Driving If you’re pushing your Cummins engine to its limits on the drag strip, sled-pull...

Available on backorder

2025-2026 Flat tappet conversion kit™

$3,999.00

Flat tappet conversion kit for the 2025–2026 Cummins, with a forged steel camshaft, DLC-coated tappets, pushrods and upgraded rocker arms. Contact us before ordering if the head or block has been surfaced, and review the oil, RPM and installation requirements below. Backorder availability: December 1, 2026.

1998-2002 5.9l OEM replacement camshaft

$499.00

A factory-profile replacement camshaft for the 1998–2002 5.9L Cummins, designed to retain stock performance. The wider lobe is the key design difference; review the vehicle fitment and oil requirements before ordering.

Choose the cam around the engine and the job

Keeping stock cam timing

Our OEM replacement cams are intended to retain stock performance. Choose the listing for your engine: 1998–2002 5.9L or 2003–2018 5.9L and 6.7L. The latter requires Hamilton Cams 1.45-inch lifters.

Comparing performance grinds

The 178/208 combos are aimed at low-RPM response. The 188/220 listings describe a 1,700–4,500 RPM range and include specific turbo and clearance guidance. On the 24-valve 188/220 combo page, VP44 owners are directed to the 178/208 option.

Cast and steel have different installation requirements

The 188/220 cast cam is listed for daily-driver and light-competition use. The 188/220 steel cam is listed for drag-strip and pulling applications and requires at least two cam-tunnel bushings.

Before ordering, review piston-to-valve clearance, lifters, springs, break-in and oil requirements. For 2019 and newer engines, use the product-specific roller or conversion-kit fitment information. Contact us with your engine year, turbo setup and intended use if you need help choosing.