TUB101680 | 1st Speed Mainshaft Gear - R380 5-Speed Manual | Discovery 2, Defender
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: TUB101680 - 1st Speed Mainshaft Gear
TUB101680 is a 1st Speed Mainshaft Gear fitted to the R380 5-speed manual transmission mainshaft to provide first-gear engagement. The gear transmits torque at the lowest ratio to enable vehicle launch and must align precisely with the countershaft, adjacent gears and selectors; when fitting, maintain the correct mainshaft assembly orientation and engagement clearances as specified for the R380 transmission.
Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Discovery 2 (1998-2004) - Mainshaft Gears 1st/2nd (5 Speed Manual Transmission) - R380-5 Speed-Manual (L318)
- Defender (1987-2006) - Mainshaft Gears 1st/2nd (5 Speed Manual Transmission, Manual Transmission) - R380-5 Speed-Manual (L315)
Frequently Asked Questions
TUB101680 is the driven first-speed gear on the R380 mainshaft. It meshes with the countershaft to establish first gear and provide the torque multiplication needed to move the vehicle from rest. Signs of failure include chipped or worn teeth, excessive end float or scoring; correct assembly orientation and engagement clearances are required when fitting.
| Model | Variant |
|---|---|
| Land Rover Discovery 2 (1998-2004) - Classic (L318) | Mainshaft Gears 1st/2nd (R380 5-Speed Manual) |
| Land Rover Defender (1987-2006) (L315) | Mainshaft Gears 1st/2nd (R380 5-Speed Manual) |
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 gear if there is visible damage such as chipped or worn teeth, scoring, or excessive play, or if it is found to be faulty during transmission disassembly; it is commonly replaced as part of an R380 rebuild when wear is evident.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
All products and accessories available on LRDirect.com come with a 2-year warranty.