Engine >> NEW CYLINDER LINER O-RINGS
Engine >> NEW CYLINDER LINER O-RINGS
New Cylinder Liner O-Ring Seals On
Cummins NH/NT 6 Cylinder Engines
Cummins Engine Company has released new O-ring seals for the cylinder liners in NH/NT 6 cylinder engines. The new seals are made of an EP material and have a smaller diameter cross-section.
The new seal replaces both the old center seal #3008998 and the old lower seal #183049. The new seal carries Cummins part #3032874 and is black in color with one blue dot.
The new O-ring seals are not to be intermixed with the former seals on the same liner. Cylinder liner deformation will result. You can use the former seals and new seals in the same engine as long as they are used in the correct combinations on each liner. The illustration below shows the correct combinations.
The AERA Technical Committee
Looking for replacement engines? Visit our online Rebuilt Engines Store. Need to fix your engine? Access here the comprehensive online repair guide for your engine. Click Here to find a used engine.


Shop online for auto body parts, engines, wheels, lights...
![]() | 1989 Merkur XR4TI Cigarette Lighter, With wire terminal; A high quality cigarette lighter; With 2 years limited Trustbuilt warranty.. | $7.03 |
![]() | 1989 Merkur XR4TI Antenna, 4-section mast; 1200 mm cable; With top and side key; A high quality universal fender mount antenna; May require modification or other adjustment to your vehicle upon installation; With 2 years limited Trustbuilt warranty.. | $6.54 |
| 2003 Lexus ES300 16" x 6.5" Alloy Wheel, SILVER; 9 SPOKE, Lifetime Warranty, . | $111.45 | |
![]() | 1989 Merkur XR4TI L4, 2.3 L, 140 CID Rebuilt Engine, Warranty: 7-Year/70,000 Mile, . | Ad Hoc |
![]() | 1988 Merkur Scorpio Used Ignition Coil, Very Good. | $57.90 |
![]() | 1988 Merkur Scorpio Used Ignition Coil, exc. SHO, Very Good. | $57.90 |
| More parts | ||




Auto Repair Quick Search
Help me find


Search DIY repair manuals by VIN...


| Get the Complete Technical Service Bulletins! |
Access diagrams and repair information such as wiring diagrams,
diagnosis and repair charts, manufacturer
service bulletins, and OEM Part
numbers of your vehicle.
|
| Access the Complete guide! |


Need To Fix Your Car or Truck?
Try Our Repair Service Finder






Auto Repair Quick Search
Help me find



























