MAHLE HS4961-2 HEAD GASKET SET (.010) FOR 89-98 4BT CUMMINS 3.9L ENGINE

Product Description

Restore proper quench and long-term sealing on your Cummins 4BT with the MAHLE HS4961-2 head gasket set (+.010"). This thicker upper-engine set is built to OE standards for reliable sealing after head/block surfacing, making it a smart choice for refreshes, swaps, and hard-working industrial builds.

Mahle HS4961-2 head set .010, Cummins 4BT 3.9L thicker head gasket, 239 CID 4B gasket set, Mahle 4BT composite head gasket, oversize +.010 head set, CPP Diesel Mahle HS4961 family, 4BT swap head gasket set, quench correction after machining, precise sealing 4B/4BT

Fitment

• 1989–1998 Cummins 4B / 4BT 3.9L (239 CID), 2-valve
• Common in step-vans, industrial/ag applications, and popular swap platforms

Cross-Reference / Alternatives (Mahle pages on CPP Diesel only)

• MAHLE HS4961 (Standard Thickness)
• MAHLE HS4961-3 (.020")

Notes

Use +.010" when deck or head resurfacing reduces installed height. Always verify surface finish/flatness and follow torque/angle specs. Head bolts/studs not included.

FAQ

Will HS4961-2 fit my 4BT?

Yes—if you have a 3.9L Cummins 4B/4BT (239 CID) and need a +.010" thicker gasket after machining.

Is this a complete head set?

Yes. It’s an upper-engine head set for head service, including the +.010" head gasket and related upper gaskets/seals. Fasteners are sold separately.

Composite or MLS?

This application uses an OE-type composite construction per Mahle spec (not MLS) for the 4BT era.

Specifications for Mahle HS4961-2