C514.6 Manual Gearbox Differential Shaft Seal 12036825B (36x54x10/13.5mm)

CORTECO 12036825B C514.6 Manual Gearbox Differential Shaft Seal (36×54×10/13.5mm)

The CORTECO 12036825B is a precision-manufactured differential shaft seal designed for the C514.6 six-speed manual gearbox. This seal prevents oil leaks at the differential output shaft, protecting the gearbox from lubricant loss and contamination ingress — one of the most common causes of premature gearbox wear.

Part Specifications

• Part Number: 12036825B
• Dimensions: 36×54×10/13.5mm
• Gearbox: C514.6 (6-speed manual)
• Brand: CORTECO (OEM supplier)
• Material: Rubber / metal case

Vehicle Compatibility

This seal fits vehicles using the C514.6 gearbox, including:

• Fiat: 500, 500L, Panda, Punto, Punto Evo, Linea, Stilo, Bravo/Brava, Doblo, Fiorino/Qubo and more
• Alfa Romeo Mito
• Audi A4
• Lancia (Musa, Ypsilon and more)
• Ford KA
• SEAT Cordoba

See the Vehicle Compatibility section below for the full model and year-range listing.

OE Cross References

Fiat / SEAT / Alfa Romeo / Lancia: 40004830 and related numbers
CORTECO: 12036825B
Also available as a direct replacement from SKT, SWAG, Wilmink Group, ZentParts, AKRON-MALÒ, BGA, PAYEN, Augustin Group and Febi Bilstein — see the OE/Cross-Ref tab for full numbers.

Frequently Asked Questions

What symptoms indicate a failed differential shaft seal?

Oil seeping from the differential output shaft, oil patches under the vehicle, or gearbox oil level dropping without obvious cause are all signs the shaft seal has failed and should be replaced promptly.

Is this seal a genuine OEM part?

Yes. CORTECO is the original equipment manufacturer (OEM) supplier for this seal. Part number 12036825B is the direct factory-equivalent replacement.

Does this seal fit all C514.6 variants?

This seal fits both sides of the C514.6 differential. Always confirm fitment using your vehicle's VIN or gearbox code if you are unsure.

Can I fit this seal myself?

Differential shaft seal replacement requires the relevant gearbox to be drained and may require a seal driver tool. We recommend installation by a qualified mechanic.

What is included in the package?

One CORTECO 12036825B differential shaft seal. Package Type A.

Why Choose Eco Torque?

As specialists in gearbox rebuilds and repairs, Eco Torque takes pride in offering genuine gearbox parts, high-quality aftermarket alternatives and competitive pricing.

Need Help Finding the Right Part?

If you are unsure whether this part is compatible with your vehicle, send us your UK registration number or VIN and we will help you find the correct part.

Reference Number: ET2093