Product Description
Interstate-McBee M-4932124 Oil Cooler Core Gasket – 1989–1997 5.9L Cummins 12-Valve
Direct-fit oil cooler core gasket for the 1989–1997 Dodge Ram 2500/3500 with the 5.9L Cummins 12-valve (6BT). Designed to seal the cooler core to the housing and help restore proper engine oil temperature control. Sold individually.
- OE-style fit: Dimensions and port layout match the factory cooler core interface.
- Reliable seal: Quality materials for resistance to heat, oil, and pressure cycling.
- Service-ready: Ideal when replacing or resealing the oil cooler core or housing.
- Value: Interstate-McBee performance and consistency at an aftermarket price.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-4932124 |
| Component | Oil cooler core gasket |
| Sold As | Each (1 gasket) |
| Material | Composite/fiber gasket (oil-resistant) |
| Position | Engine – oil cooler core to housing seal |
What’s Included
- (1) Interstate-McBee oil cooler core gasket, P/N M-4932124
Vehicle Fitment
For best results, verify by engine serial number (ESN) when available.
- Dodge Ram 2500/3500 with 5.9L Cummins 12-valve (6BT)
- Model Years: 1989–1997
Install Notes
- Drain coolant and engine oil as required; cap/plug lines to minimize mess.
- Remove old gasket material completely; clean mating surfaces until smooth and dry.
- Install gasket dry unless your service manual specifies a sealant; align ports carefully.
- Torque fasteners in sequence to factory specifications; pressure-test for leaks after refill.
Recommended/Related Parts
- Oil cooler core (if your existing core shows corrosion or clogging)
- Oil cooler housing & cover seals/O-rings as applicable
- Fresh coolant and engine oil/filter for service completion
Why Buy From CPP Diesel
- Diesel-specialist support with real-world Cummins experience
- Fast shipping and competitive pricing
- Deep inventory of complementary B-Series service parts
FAQ
Will this fit my 5.9L Cummins?
This gasket is intended for 1989–1997 5.9L Cummins 12-valve applications. Verify by ESN or compare the gasket shape/port layout to your original before installation.
How many gaskets are required?
One gasket is used between the oil cooler core and the housing. Order additional housing seals/O-rings if your application uses them.
Does this include the cooler core or O-rings?
No. This listing is for the core gasket only. Core, cover, and any O-rings/seals are sold separately.
Do I need sealant?
Most installs use the gasket dry on clean, flat surfaces. Always follow the Cummins service manual for your engine and use only the specified sealant if required.
