Product Description
MAHLE SS45953 is a set of six top hat style valve stem seals for the 1989–1998 5.9L Cummins (12-valve). Designed to OE form/fit/function and built from high-temperature fluoroelastomer for long service life and reliable oil control.
- Quantity: Set of 6 seals
- Design: Top hat style
- Position: Intake & Exhaust
- Material: Fluoroelastomer (high heat/chemical resistance)
- Direct replacement for 5.9L Cummins 1989–1998
Fitment
- 1989–1998 Dodge Ram 2500 / 3500 with 5.9L Cummins (12-valve)
Cross Reference Numbers
- Cummins: 3957912
- MAHLE: SS45953
Notes
If your cylinder head currently uses the older-style seals, machining may be required to use the top hat style. Verify what’s on your head before ordering.
FAQ
Will these fit my 1989–1998 5.9L Cummins?
Yes—these are a direct replacement for 1989–1998 Dodge Ram 2500/3500 with the 5.9L 12-valve Cummins.
How many seals are included?
Six seals—enough for one 12-valve cylinder head (intake and exhaust).
Do I need machining to use “top hat” seals?
Only if your head currently uses the older-style seals. Many heads accept top-hat seals; when in doubt, measure and consult your machinist.
What are these made of?
High-temperature fluoroelastomer for excellent heat and chemical resistance.
Are these for intake or exhaust?
They’re designed for both intake and exhaust positions.
