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BZV1051 - O-Ring by Land RoverTransmission or Gearbox Part Land Rover Range Rover Defender, Discovery, Range Rover

BZV1051 - O-Ring – R380 Gearbox Extension Case

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Genuine Part
Genuine: Original manufacturer part. This product is the original part designed and produced by the vehicle manufacturer.
O-Ring for the R380 five-speed manual gearbox extension case.

Seals the oil pump within the gearbox extension housing.
Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Land Rover Discovery 2 1998-2004 (L318)
Range Rover Classic up to 1994
Range Rover Classic 1994-2001 (P38)
Fitment Notes DEFENDER 1987-2006 — R380 5-speed manual gearbox, extension case oil pump seal O-ring
DISCOVERY 1 1989-1998 — R380 manual gearbox, extension case oil pump seal O-ring (FA393361 to WA799999)
DISCOVERY 2 — R380 manual gearbox O-ring
RANGE ROVER P38 1994-2001 — R380 5-speed manual gearbox, extension case oil pump seal O-ring
RANGE ROVER CLASSIC 1992-1994 — Manual gearbox extension case oil pump seal O-ring (from JA610294)
Alternative Codes
BZV1051

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Frequently asked questions

What does the BZV1051 O-ring seal?
The BZV1051 O-ring seals the oil pump within the R380 five-speed manual gearbox extension case. It sits in the extension housing to keep gearbox oil contained around the pump.
Which gearboxes use this O-ring?
This O-ring fits the R380 5-speed manual gearbox used across the Defender, Discovery 1, Discovery 2, Range Rover Classic and Range Rover P38. On the Discovery 1 it covers VIN FA393361 to WA799999, and on the Range Rover Classic from VIN JA610294.
Should the O-ring be replaced when the gearbox is opened?
Replace this O-ring whenever the extension case or oil pump is disturbed. O-rings take a set once compressed and typically won't reseal reliably if refitted, so a new one is standard practice when reassembling the R380 to prevent an oil leak.