Product Description
MAHLE HS4068A upper head gasket set delivers OE-grade sealing for the 1989–1998 5.9L Cummins 12-valve. The included head gasket is .010" over-thickness to recover proper compressed height after head/block machining, helping maintain quench and cylinder pressure in tow rigs, daily drivers, and work trucks.
Fitment
- Engine: 5.9L Cummins 12-valve (6BT), Dodge/Ram 2500 & 3500, model years 1989–1998.
- Thickness: .010" over (0.25 mm) upper set for use when additional head gasket thickness is required after machining.
What’s Included
- .010" over head gasket (MLS) plus intake, exhaust, and ancillary upper-engine gaskets/seals required for a head service. Head bolts/studs sold separately.
Cross-Reference / Alternatives (Mahle on CPP Diesel only)
- MAHLE HS4068 (Standard thickness)
- MAHLE HS4068B (.020" over)
- MAHLE 4068C (Head gasket, STD)
- MAHLE 4068D (Head gasket, .010")
- MAHLE 4068E (Head gasket, .020")
- MAHLE CS4068 (Lower engine gasket set)
Installation Notes
- Verify bore size and thickness needs before ordering; clean deck and head surfaces thoroughly.
- Follow Cummins torque spec and sequence; consider new OE bolts or upgrade to studs.
- Re-check coolant, oil, and boost leaks after first heat cycle.
FAQ
Is HS4068A the right choice after machining?
Yes—HS4068A uses a .010" over-thickness gasket to recover compressed height when the head/block has been surfaced.
Does this kit include head bolts or studs?
No. Hardware is sold separately; we recommend replacing bolts or upgrading to head studs during reassembly.
Is the head gasket MLS?
Yes—this kit uses a multi-layer steel head gasket designed for durability under cylinder pressure.
Will it fit my 24-valve (1998.5–2002)?
No—HS4068A is for 12-valve 5.9L (1989–1998). See 24-valve specific Mahle sets.
Specifications for Mahle HS4068A
| Attribute | Value |
|---|---|
| Brand | MAHLE / Clevite |
| Part Number | HS4068A |
| UPC (GTIN-12) | 725975872833 |
| Shipping Info | Free Shipping from CPP Diesel; package dims approx. 30.00" L × 8.00" W × 1.25" H. |
| Configuration | Upper (head) gasket set; .010" over MLS head gasket |
| Prop 65 | This product can expose you to chemicals including lead and lead compounds, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. |
