Product Description
CUMMINS 3957912 OEM VALVE STEM SEAL FOR 1989-1998 5.9L 12V CUMMINS
The Cummins 3957912 OEM valve stem seal is a genuine top-hat style valve stem seal used on many 5.9L 12-valve Cummins 6BT cylinder heads.
This seal helps control oil at the valve stem to reduce oil consumption, smoke, and valve guide oil leakage during engine operation.
Use this seal when the cylinder head is configured for top-hat style valve stem seals. Always verify cylinder head setup before ordering.
FEATURES
- Genuine OEM Cummins valve stem seal
- Top-hat style design
- Helps reduce oil consumption and smoke
- Designed for many 5.9L 12-valve Cummins engines
- Suitable for cylinder head rebuilds and valve service
- Sold individually
FITMENT
- 1989-1993 Dodge D/W 250 5.9L 12V Cummins
- 1989-1993 Dodge D/W 350 5.9L 12V Cummins
- 1994-1998 Dodge Ram 2500 5.9L 12V Cummins
- 1994-1998 Dodge Ram 3500 5.9L 12V Cummins
- Select 4BT, 6BT, ISB, and QSB Cummins applications
Fitment Note: Verify by engine serial number and cylinder head configuration before ordering.
WHAT'S INCLUDED
- 1 Cummins 3957912 valve stem seal
PRODUCT DETAILS
- Brand: Cummins
- Part Number: 3957912
- Product Type: Valve stem seal
- Seal Style: Top-hat style
- Engine Compatibility: 5.9L 12V Cummins 6BT
- Quantity Required: 12 per 12-valve engine
- Condition: New
FAQ
Will this fit my 1989-1998 5.9L 12-valve Cummins?
Yes, if your cylinder head is set up for top-hat style valve stem seals.
How many seals do I need?
A 12-valve Cummins engine uses 12 valve stem seals.
Is this the same as Cummins 3921640?
No. Cummins 3921640 is an earlier seal style. Cummins 3957912 is the top-hat style seal.
Can this be used on intake and exhaust valves?
Yes, when the cylinder head is machined and configured for this seal style.
Is this a genuine Cummins part?
Yes. This is a genuine OEM Cummins valve stem seal.
