Cummins 3947759 Commonrail Lifters - Tappets

These Cummins 39947759 Lifters or Tappets are a recommended replacement item when installing a High Performance Camshaft in your Cummins 5.9L or 6.7L Turbo Diesel engine. The OEM replacement tappets are sold as a complete set of twelve OEM 3947759 tappets.
In stock
SKU
FG 3947759
$172.64

Cummins 3947759 OEM Replacement Lifters or Tappets for the 5.9L and 6.7L Cummins Turbo Diesels.

The Cummins 3947759 Common Rail Lifters or Tappets applications:

  • 1998.5 to 2002 Dodge Ram 5.9L Cummins
  • 2003 to 2007 Dodge Ram 5.9L Cummins
  • 2007.5 to 2016 Dodge Ram 6.7L Cummins

Cummins for the 1998.5 to 2016 Dodge Cummins Turbo Diesel. These OEM Cummins tappets are for use on the Cummins 5.9L and 6.7L Turbo Diesel engines. This Cummins 3947759 Tappet is the Original Equipment Manufacturer part. This OEM Tappet is the same tappet that was made and installed by Cummins at the factory. 

These OEM Cummins Common-rail Tappets are a complete set of twelve tappets for a Cummins 5.9L or Cummins 6.7L 24 Valve Diesel engine.

These Cummins 3947759 Lifters, Tappets are a recommended replacement when installing a High Performance Camshaft in your Cummins Turbo Diesel engine. Installation of these new Cummins 3947759 5.9L and 6.7L Tappets are for high horsepower and High RPM engine builds or modifications. These Cummins tappets have a larger cam footprint than the stock 12 and 24 Valve Cummins Tappet. The more substantial contact of the Cummins tappet is used to ensure constant contact with a modified camshaft profile as the engine revolutions are increased. RPM's is increased. Using old tappets on a new camshaft could cause uneven wear on the camshaft itself. These Cummins tappets sold as a complete set of 12 tappets required for your modification.

The Cummins 3947759 5.9L / 6.7L Common rail Lifters or Tappets Kit contains:

  • 12 Cummins 3947759 24 Valve Common rail Lifters - Tappets

The term tappet is widely used with internal combustion engines. It is most commonly encountered as a maintenance task for overhead valve engines, that of 'adjusting the tappets'. This operation improves the overall clearance in the valve actuation system: typically 20 thousandths of an inch (0.5 mm). The name arises because it is the clearance of the tappets that is adjusted, even though the adjustment is not made to the tappets themselves.

Strictly speaking, the tappet is that part also termed a cam follower that runs on the camshaft and is made to move vertically by the action of the rotating cam. In an overhead valve engine, this tappet is fitted down in the engine block. From there it drives a long thin pushrod, up to the top of the engine, above the cylinder head. Here the rockers, arranged on a rocker shaft beneath the rocker cover, reverse the direction of the valve movement to press the valves downwards to open them.

Product Application
1998.5 to 2016 Dodge Cummins Turbo Diesel
Width
8
Height
4
Length
8
Manufacturer
Cummins
Item Number
FG 3947759
Manufacturer Part No
3947759
Condition
New
ShippingMessage
IN STOCK
Model
2500, 3500
Year
1998.5, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
Special Price
$172.64
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