Product Description
Stop oil creep past the guides and keep your 12-valve running clean with the MAHLE SS45953 valve stem seal set for 1989–1998 Dodge/Ram 5.9L Cummins. These OE-style top hat positive seals deliver reliable oil control under heavy towing, work-truck duty, and daily driving.
Fitment
- 1989–1998 Dodge/Ram 2500 & 3500 — 5.9L Cummins 12-valve (6BT)
What’s in the box
- Set of 6 “top hat” style valve stem seals — designed for intake & exhaust positions
- Material: high-temperature fluoroelastomer for heat/chemical resistance
Cross-Reference / Related Mahle Items (CPP Diesel only)
- MAHLE SS45411A — Old-style push-on seals for many 12V heads (alternative)
- MAHLE SS45903 — Intake valve stem seal set (1998.5–2002 24V)
- MAHLE SS45902 — Exhaust valve stem seal set (1998.5–2002 24V)
- MAHLE VS50215S — Valve cover gasket (1989–1998 12V)
- MAHLE MS10141 — Exhaust manifold gasket set (1989–1998 12V)
- MAHLE SS45963 — Top-hat exhaust valve seals (2003–2007 24V)
Notes
Some 12V heads use old-style push-on seals. If your head isn’t already machined for positive “top hat” seals, machining may be required. Always verify what’s on your cylinder head before ordering.
FAQ
Will these fit my 1989–1998 5.9L Cummins 12-valve?
Yes, SS45953 is a direct replacement set for 12-valve 5.9L heads used in 1989–1998 Ram 2500/3500 trucks.
How many seals are included, and for which side?
Six seals total. They’re designed for both intake and exhaust positions on a single 12-valve head.
What’s the material?
High-temp fluoroelastomer for stable oil control under heat and chemical exposure.
Do I need machining?
Only if your head uses the older push-on style. Many 12V heads accept top-hat seals as-is, but verify before assembly.
Specifications for Mahle SS45953
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | SS45953 |
| Design | Top Hat (positive) |
| Engine Compatibility | 1989–1998 5.9L Cummins 12-valve (Ram 2500/3500) |
| Quantity in Set | 6 |
| Material | Fluoroelastomer |
| UPC | 027067929860 |
| GTIN | 027067929860 |
| Shipping | Ships from CPP Diesel; shipping calculated at checkout. Optional shipping insurance available at checkout. |
| Prop 65 | This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more |
