OIL PAN GASKET
The PAI 631261 Oil Pan Gasket is a precision-cut seal designed for the Detroit Diesel Series 60 engine family. Built to replace OEM references like 23522279 and 23539104, this gasket ensures a reliable, leak-free seal between the oil pan and engine block under heavy-duty conditions. Sold by Wofford Truck Parts, it brings quality aftermarket construction to support long life and performance in truck engine rebuilds.
$36.86
Specifications
The PAI 631261 Oil Pan Gasket (available via Wofford Truck Parts) is specifically crafted for the Detroit Diesel Series 60 engine family, fitting front- and rear-sump configurations in 12.7L and 14.0L versions. It replaces OEM part numbers 23522279 and 23539104.
With a gasket length of approx. 45.5 in (≈115.6 cm) when laid flat, the gasket is designed to match the oil pan flange on these engines.
Made of high-quality rubber/silicone material and tested for heavy-duty truck service, the gasket is built to handle high oil temperatures, vibration, and heavy loads. Whether you’re doing a full engine rebuild or replacing a leaking oil pan gasket, the 631261 offers a premium replacement solution. PAI backs its product with a 2-year unlimited-mileage warranty. Before installation, verify your engine is a Detroit Series 60 (12.7L or 14.0L) and that the original OEM part number matches one of the cross references to ensure correct fit.
Compatibility
Peterbilt 377 / 379 / 378 / 387 / 389 (heavy tractors & highway) — 1990s – 2007/2010
Kenworth W900 / T800 / T600 / T2000 / T660 / T680 (conventionals & heavy tractors) — 1990s – 2010
Freightliner FLD / Century / Columbia / Coronado / Cascadia / Cascadia Evolution (tractor / highway) — 1990s – 2011
International / Navistar 9100 / 9200 / 9400 / 9900 / ProStar (conventionals & highway) — 1990s – ~2008–2010
Volvo VN / VNL / VN series (selected configurations) — late-1990s – 2010
Mack (selected heavy / vocational & highway models) — 1990s – 2010
Western Star / Sterling / other vocational Class-8 chassis — 1990s – 2010
Buses & motorcoaches (MCI, Prevost, New Flyer, Gillig, coach builders) — mid-1990s – 2010/2011
RV / motorhome chassis (Prevost, Monaco/Featherlite chassis when Series-60 was specified) — mid-1990s – 2010
Medium-duty OEMs (selected Freightliner/International medium platforms where Series-60 was offered) — 1990s – early-2000s
Specialty / vocational equipment (refuse, mixers, oilfield, etc.) using Class-8 chassis with Series-60 options — 1990s – 2010
Alternative Part Numbers
23539104
