Product Description
The INTERSTATE-MCBEE M-3947759 VALVE TAPPET is designed for 2003–2018 5.9L and 6.7L Cummins diesel engines. This aftermarket replacement tappet, also known as a lifter or cam follower, is engineered to help maintain proper valve train operation while providing dependable performance and durability.
Use this part when repairing valve train wear, replacing a camshaft, servicing lifter-related issues, or rebuilding a Cummins diesel engine. Always verify fitment by engine serial number and application before ordering.
FEATURES
- Quality Interstate-McBee aftermarket replacement valve tappet
- Direct-fit replacement for applicable Cummins engines
- Helps maintain proper camshaft and valve train operation
- Designed for engine repair and rebuild applications
- Built for durability and long service life
- Sold individually
FITMENT
- 2003–2007 Dodge Ram 2500/3500 5.9L Cummins Common Rail
- 2007.5–2018 Ram 2500/3500 6.7L Cummins
- Select Cummins ISB and QSB industrial applications
WHAT'S INCLUDED
- 1 Interstate-McBee M-3947759 Valve Tappet
CROSS-REFERENCE AND RELATED PRODUCTS
- Interstate-McBee M-3947759
- Cummins 3947759
- Cummins 4891226
- Cummins Camshaft Components
- Valve Train Service Parts
SPECIFICATIONS
- Manufacturer: Interstate-McBee
- Part Number: M-3947759
- Part Type: Valve Tappet / Lifter / Cam Follower
- Engine Compatibility: 5.9L Cummins, 6.7L Cummins
- Fitment Years: 2003–2018
- Vehicle Application: Dodge Ram / Ram 2500 and 3500
- Condition: New Aftermarket Replacement
- Quantity: Sold Individually
- Typical Quantity Per Engine: 12
FAQ
Will this part fit my truck?
This valve tappet fits many 2003–2018 5.9L and 6.7L Cummins applications. Always verify fitment using your engine serial number before ordering.
What does a valve tappet do?
The valve tappet transfers camshaft motion into valve train movement and is a critical component in maintaining proper engine operation.
Is this an OEM Cummins part?
No. Interstate-McBee M-3947759 is a quality aftermarket replacement designed to replace Cummins part number 3947759.
How many tappets are required for a complete engine set?
Most 24-valve 5.9L and 6.7L Cummins engines require 12 tappets. This part is sold individually.
Should tappets be replaced with a new camshaft?
Yes. Replacing tappets during camshaft installation is recommended to help ensure proper wear patterns and long-term reliability.
Do I need any related parts?
Inspect the camshaft, pushrods, rocker arms, valve train hardware, seals, and related components during installation and replace worn parts as necessary.
