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TKC4635Z - Layshaft Shim – LT77/R380

Original price - Original price €2,90
Original price
€2,90
€2,90 - €2,90
Current price €2,90
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Genuine Part
Genuine: Original manufacturer part. This product is the original part designed and produced by the vehicle manufacturer.
Layshaft Shim for the LT77 and R380 five-speed manual gearboxes, located at the layshaft (countershaft) and reverse idler.

This is a selective shim used to set the layshaft endfloat and bearing preload during gearbox assembly. It is supplied in graded thicknesses and fitted as required to achieve the correct running clearance.
Vehicle Model Land Rover Defender up to 2016
Range Rover Classic up to 1994
Fitment Notes DEFENDER 1987-2006 — 5-speed manual gearbox (LT77/R380), layshaft shim, to Suffix E inclusive
RANGE ROVER CLASSIC 1986-1991 — Layshaft & Reverse Idler, manual transmission
Alternative Codes
TKC4635ZTKC4635

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

Need it faster? Contact us about express import (2–5 business days).


When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business dayscontact us before ordering.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What does the layshaft shim do?
The layshaft shim sets the layshaft endfloat and bearing preload inside the LT77 and R380 five-speed manual gearboxes. It's a selective shim fitted during gearbox assembly to achieve the correct running clearance on the layshaft, also called the countershaft, and reverse idler.
Which gearboxes and models does this shim fit?
This shim fits the LT77 and R380 five-speed manual gearboxes. That covers the Land Rover Defender from 1987 to 2006 up to Suffix E, and the Range Rover Classic from 1986 to 1991 at the layshaft and reverse idler. Check your gearbox type and suffix before ordering.
How do I know which shim thickness I need?
Layshaft shims are supplied in graded thicknesses and selected to suit each gearbox during a rebuild. The correct thickness is normally determined by measuring the actual endfloat as you assemble the box, rather than by model. Order the graded size your measurements call for.