FRC4501 | Mainshaft Collar O-Ring - LT77 | Defender, Discovery 1, Range Rover Classic
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: FRC4501 - Mainshaft Collar O-Ring - LT77
FRC4501 is a Mainshaft Collar O-Ring for the LT77 extension case. Fitted around the mainshaft collar inside the LT77 gearbox extension case, it provides the sealing surface that prevents gearbox oil leaking past the collar.
Compatibility
- Defender (1987-2006) - To VIN LA939975
- Discovery 1 (1989-1998) - From VIN FA393361 to WA799999
- Range Rover Classic (1986-1991) - To VIN HA610293
- Range Rover Classic (1992-1994) - From VIN JA610294
Frequently Asked Questions
FRC4501 is an O-ring that seals the mainshaft collar within the LT77 gearbox extension case, preventing oil from escaping the extension case around the mainshaft. It is a simple sealing component and should be replaced if it becomes cut, flattened or perished.
| Model | Variant |
|---|---|
| Land Rover Defender (1987-2006) | Extension case & Oil Pump - From suffix G (5 Speed Manual Transmission) |
| Land Rover Defender (1987-2006) | Extension case & Oil Pump - To suffix F inclusive (5 Speed Manual Transmission) |
| Land Rover Defender (1987-2006) | Gasket Kit (5 Speed Manual Transmission) |
| Land Rover Range Rover Classic (1986-1991) | Extension case & Oil Pump - To VIN HA610293 (Manual Transmission) |
| Land Rover Range Rover Classic (1992-1994) | Extension Case - From VIN JA610294 (Manual Transmission) |
| Land Rover Discovery 1 (1989-1998) | Extension Case (4 Cylinder) - From VIN FA393361 to WA799999 (Manual Transmission) |
If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.
Replace the O-ring whenever it shows signs of deterioration (cracks, hardening or deformation) or whenever the LT77 extension case is dismantled for service or repair. Fitting a new O-ring during an extension case overhaul is standard practice to ensure a reliable seal.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
- Z8 products are normally supplied by Allmakes.
All products and accessories available on LRDirect.com come with a 2-year warranty.