Product Description
MAHLE HS4961 is an OE-quality head set for the 3.9L Cummins 4B/4BT/4BTA (239 CID). It delivers reliable sealing for top-end service and includes the critical upper-engine gaskets and seals needed to complete the job. Head bolts are not included.
- Engine: Cummins 4B/4BT/4BTA 3.9L (239 CID)
- Head gasket: Standard thickness (alternates available: +.010" and +.020")
- Bore: 4.02" (102.0 mm)
- Material: Composite-style gaskets (per application)
- Packaging: Tray-pack head set for easy content verification
- Warranty: 12-month limited
- Country of origin: Mexico
- UPC/GTIN: 00725975582336
Fitment
- Applications equipped with the 3.9L Cummins 4B/4BT/4BTA engine (industrial, agricultural, marine, power unit, step-van and swap uses). Standard replacement for 4B-3.9 platforms.
Cross Reference Numbers
- Cummins Upper/Head Set: 3804896 (supersedes 3802361, 4089648)
- MAHLE Alternates (thickness): HS4961-2 (+.010"), HS4961-3 (+.020")
What’s Included
Standard-thickness cylinder head gasket plus associated upper-engine gaskets and seals (intake/exhaust manifold, valve cover, injector/inlet seals as applicable). Head bolts/studs sold separately.
FAQ
Will this fit my 4BT?
Yes—this head set fits engines using the 3.9L Cummins 4B/4BT/4BTA platform.
Is this MLS or composite?
This application uses a composite-style, standard-thickness head gasket per OEM spec.
Do I need the thicker gasket?
Use standard thickness for stock deck height. If the head/block has been resurfaced, select +.010" or +.020" as needed (sold separately as HS4961-2 / HS4961-3).
Are head bolts included?
No. Add quality head bolts or studs when reassembling.
