Product Introduction C4960126 Flywheel Housing Gasket is a flat sealing spacer sandwiched between flywheel housing and engine block on ISZ13 diesel engine. It fills the micro clearances of the mating flange to retain lubricating oil inside the crankcase and block dust, moisture and road grime from invading the flywheel cavity. This aftermarket replacement gasket solves slow oil weeping around the housing joint, dirty flywheel ring gear and accelerated wear of clutch components caused by gasket brittleness, compression loss and thermal degradation of aged seals. Reliable sealing stabilizes the rear crankshaft sealing environment and reduces unexpected wear for long-haul freight trucks running continuous highway routes.
Product Advantages Adopts oil-resistant composite material with moderate elasticity to absorb minor flange deformation from heat expansion. The uniform thickness guarantees even pressure distribution after bolt tightening. It maintains stable performance under sustained engine vibration and temperature variation. Each gasket is inspected for outline integrity before shipment, OEM shape supports direct swap during engine rear-end overhaul.
| Item | Parameter |
|---|---|
| Part Number | C4960126 |
| Product Name | Flywheel Housing Gasket |
| Matching Engine | ISZ13 |
| Material | Oil Resistant Composite Sheet |
| Feature | Crankcase Sealing, Isolate External Dust and Moisture |
| MOQ | Negotiable |
| Application | Flywheel Housing and Engine Block Mating Seal |
Applicable Models Compatible with heavy-duty commercial vehicles equipped with ISZ13 diesel engine, widely used for intercity bulk cargo transportation.



FAQ
Q1: What risk arises when oil leaks from this gasket onto the flywheel ring gear?
A1: Oil reduces friction, triggers slippage and accelerates abnormal wear on the starter drive teeth.
Q2: Why should technicians check for burrs and warpage on the flange surface before installation?
A2: Irregular flange surfaces create uneven compression and easily lead to repeated leakage.
Q3: Can a leaking flywheel housing gasket be confused with a faulty rear crankshaft oil seal?
A3: Yes, both produce wet oil traces near the flywheel; clean and monitor to tell them apart.