Product Description
CUMMINS 4947667 OEM REAR MAIN SEAL COVER GASKET – 5.9L (1989–2002)
Stop rear cover leaks the right way with the genuine CUMMINS 4947667 OEM rear main seal cover gasket for 1989–2002 5.9L B-Series engines. This factory-spec rear cover gasket seals the rear main seal housing to the engine block on BS3 5.9L 6BT/ISB applications, keeping oil inside the crankcase and off your clutch, flexplate, and driveway.
Why This Genuine Cummins Gasket Matters
- Direct-fit OE replacement for the rear main seal housing (rear cover) gasket on 5.9L B-Series engines.
- Engineered sealing profile to help prevent oil leaks at the rear cover interface.
- Correct thickness and material for long-term durability in heat and oil exposure.
- Ideal any time you replace the rear main seal or remove the rear cover for clutch or transmission work.
- Backed by Cummins engineering and sold by CPP Diesel, your Cummins-focused parts source.
Fitment Details
This gasket is used primarily on BS3-era 5.9L B-Series engines and is a direct fit for:
- 1989–1993 Dodge Ram 2500/3500 – 5.9L 12V 6BT Cummins
- 1994–1998 Dodge Ram 2500/3500 – 5.9L 12V 6BT Cummins
- 1998.5–2002 Dodge Ram 2500/3500 – 5.9L 24V ISB (VP44) Cummins
It is also commonly used on BS3 B-Series industrial/off-highway engines (4BT/6BT/ISB 5.9). For those applications, always confirm by engine serial number (ESN) before ordering.
Does NOT fit common-rail engines. 2003–2007 5.9L CR and 2007.5+ 6.7L Cummins use different rear cover and gasket designs. Order by VIN/ESN for those year ranges.
Cross-Reference & Related Cummins Parts
Internal Cummins ID cross-reference numbers for this gasket include: 3928493, 3914386, 3938159, J938159, J914386, J928493. For a complete rear-of-engine reseal or timing case service, pair this part with other genuine Cummins components:
- CUMMINS 5259499 OEM REAR MAIN CRANKSHAFT SEAL – RAM 5.9L/6.7L (1989–2018) – the matching OE rear main crankshaft oil seal for these engines.
- CUMMINS 3938156 OEM TIMING GEAR HOUSING GASKET – 5.9L 12V/24V (1989–2002) – seals the timing gear housing to the block; commonly serviced with rear and front engine reseals.
- CUMMINS 3284623 OEM TAPPET / PUSH ROD COVER GASKET – 5.9L (1989–2002) – genuine tappet/push rod cover gasket for the same B-Series platforms.
- Browse all genuine Cummins OEM gaskets & seals at CPP Diesel – for a full engine reseal or additional Cummins B-Series components.
Specifications for cummins 4947667
| Specifications for cummins 4947667 | |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Part Number | 4947667 |
| Product Type | Rear main seal cover gasket (rear cover gasket / rear main seal housing gasket) |
| UPC | Not specified by manufacturer (UPC not published in available Cummins data) |
| GTIN | Not specified by manufacturer (GTIN not published in available Cummins data) |
| Cross Reference | 3928493, 3914386, 3938159, J938159, J914386, J928493 (Cummins cross/legacy IDs) |
| Engine Family | BS3 B-Series 5.9L 6BT / ISB (automotive & industrial applications) |
| Verified Automotive Fitment | 1989–2002 Dodge Ram 2500/3500 with 5.9L 12V 6BT or 24V ISB (VP44) |
| E-Codes / Emissions | Not applicable (gasket – not an emissions calibration component) |
| Shipping Info | Lightweight gasket ships flat in protective packaging. Typical processing 1–5 business days. Shipping cost calculated at checkout via CPP Diesel. |
| Package Dimensions | Approx. 11.5" x 11.5" x 0.13" (as boxed by CPP Diesel) |
| Quantity Per Engine | 1 (sold individually) |
| Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Installation Notes
- Clean the block and rear cover mating surfaces thoroughly; remove all old gasket material and residue.
- Install the gasket aligned correctly with bolt holes and oil passages; avoid folding or stretching the material.
- Follow Cummins torque sequence and torque specs for the rear main seal housing bolts.
- Best practice: replace the rear main crankshaft seal at the same time using genuine Cummins 5259499.
FAQ
Will this gasket fit my 1989–2002 5.9L Cummins Ram?Yes. CUMMINS 4947667 is the correct OE rear main seal housing (rear cover) gasket for 1989–2002 Dodge Ram 2500/3500 trucks with the 5.9L 12V 6BT or 5.9L 24V ISB (VP44) engine. For industrial B-Series engines, verify by ESN.
Does this gasket include the rear main crankshaft seal?
No. This part is the housing gasket only. For the crankshaft seal itself, pair it with genuine Cummins 5259499 rear main seal during service.
Are Cummins numbers 3928493 or 3914386 the same as 4947667?
Yes. 3928493, 3914386, 3938159, J938159, J914386, and J928493 are common cross/legacy identifiers used in Cummins catalogs for the same rear cover gasket. 4947667 is the current Cummins part number.
Do I need RTV or sealant with this gasket?
Follow the Cummins service manual for your specific engine. In most BS3 5.9L applications this gasket is installed dry, with only small dabs of sealant at case joint seams if specified. Avoid excessive RTV, which can squeeze out and contaminate the crankshaft area.
Will this fit 2003+ 5.9L common-rail or 6.7L Cummins engines?
No. 2003–2007 5.9L common-rail and 2007.5+ 6.7L engines use different rear main seal housings and gaskets. Always order by VIN/ESN for those applications or use the correct Cummins part numbers for CR/6.7L platforms.
