{"product_id":"mainshaft-r380","title":"Mainshaft - R380 for Defender (1986 – 2006) R380 - Suffix K - (G)0623640K – TUD101720","description":"\u003cp\u003eThe mainshaft is the central output shaft within the R380 five-speed manual gearbox, transmitting drive from the gearset to the transfer case. It carries the gear clusters and syncroniser assemblies, and is subject to significant rotational load and wear over time. A worn or damaged mainshaft typically presents as bearing noise, difficulty selecting gears, or excessive play in the drivetrain.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured to OEM specification for the R380 gearbox from Suffix K, engine number prefix (G)0623640K onwards\u003c\/li\u003e\n\u003cli\u003eDirect replacement component - no modification required for installation on correct suffix gearboxes\u003c\/li\u003e\n\u003cli\u003eSupplied as a single shaft; associated bearings, syncroniser rings, and seals should be inspected and replaced as part of a full gearbox rebuild\u003c\/li\u003e\n\u003cli\u003eConfirm gearbox suffix before ordering, as mainshaft dimensions vary across R380 production variants\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\n\u003cp\u003eFits Land Rover Defender (1986–2006), Discovery 1 (1989–1998), and Discovery 2 (1998–2004) equipped with the R380 manual gearbox from Suffix K \/ engine number (G)0623640K onwards.\u003c\/p\u003e\n\u003cp\u003eNot sure about fitment? Feel free to get in touch at \u003ca href=\"mailto:info@thomasperformance.co.uk\"\u003einfo@thomasperformance.co.uk\u003c\/a\u003e\u003c\/p\u003e","brand":"Allmakes PR2","offers":[{"title":"Default Title","offer_id":55821910475096,"sku":"TUD101720","price":112.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/0070\/6392\/files\/TUD101720-600x600.jpg?v=1758873410","url":"https:\/\/thomasperformance.co.uk\/products\/mainshaft-r380","provider":"Thomas Performance Ltd","version":"1.0","type":"link"}