Product Description
The CUMMINS 3947759 OEM VALVE TAPPET (LIFTER) is designed for 2003–2018 5.9L and 6.7L Cummins ISB diesel engines. This genuine Cummins valve tappet is built to restore proper valve train operation while maintaining OE fitment, durability, and reliability.
Use this part when servicing valve train components, replacing a camshaft, repairing lifter wear, or rebuilding a Cummins diesel engine. Always verify fitment by year, make, model, engine, and engine serial number before ordering.
FEATURES
- Genuine Cummins OEM replacement valve tappet
- Direct-fit replacement lifter / cam follower
- Designed for 2003–2018 Cummins ISB applications
- Helps restore proper valve train operation
- Recommended for maintenance, repair, or engine rebuild work
- Sold individually
FITMENT
- 2003–2007 Dodge Ram 2500/3500 5.9L Cummins
- 2007.5–2018 Ram 2500/3500 6.7L Cummins
- Select Cummins ISB and QSB industrial applications
WHAT'S INCLUDED
- 1 Cummins 3947759 OEM Valve Tappet (Lifter)
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3947759
- Cummins 4891226
- Interstate-McBee M-3947759
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3947759
- Part Type: Valve Tappet / Lifter
- Engine Compatibility: 5.9L Cummins, 6.7L Cummins
- Fitment Years: 2003–2018
- Vehicle Application: Dodge Ram / Ram 2500 and 3500
- Condition: New
- Quantity: Sold Individually
- Typical Quantity Per Engine: 12
FAQ
Will this part fit my truck?
This part fits the applications listed above. Always verify your year, make, model, engine, and engine serial number before ordering.
Is this a direct replacement?
Yes. Cummins 3947759 is designed as a direct-fit OEM replacement valve tappet for the listed applications.
What is included?
This listing includes one Cummins 3947759 OEM valve tappet.
How many tappets are needed 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 when replacing a camshaft?
Replacing tappets during camshaft replacement is recommended to help ensure proper wear patterns and long service life.
Do I need any related parts?
Inspect the camshaft, pushrods, rocker components, seals, and related valve train hardware during installation and replace worn parts as necessary.
