ERR4708 - Automatic Drive Belt Tensioner – 300TDi

- €45,80

€45,80

€45,80 - €45,80

€45,80

Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.

Automatic Drive Belt Tensioner for the front-end accessory drive system, maintaining correct tension across the auxiliary belt that drives the alternator, water pump and power steering pump.

The spring-loaded mechanism automatically compensates for belt stretch and load variation during engine operation, removing the need for manual adjustment and protecting the belt and ancillaries from slip. Fitted to the 2.5L 4-cylinder 300TDi turbo diesel engine.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994

Fitment Notes DEFENDER 1987-2006 — automatic ancillary drive tensioner, 2.5L 300 Tdi
DISCOVERY 1 1989-1998 — 2.5L 300 Tdi (incl. EGR Gem), from VIN MA081992
RANGE ROVER CLASSIC 1992-1994 — 2.5L Tdi, from VIN JA610294

Alternative Codes

ERR4708RERR4708ERR4708ESAPV1004

In stock 2 units

1 · Gouda 1 · Drachten

Express delivery available

4 more on the way · ETA 21-07-2026

When will my order arrive?

Order before 15:00 (Mon–Fri): same-day dispatch for in-stock items.
UPS Express (order before 14:00): dispatched today, delivered tomorrow where available.
Netherlands / Belgium / Germany: 2–4 working days.
Other EU countries + UK: 4–8 working days.
Outside EU/UK: delivery times vary — contact us for an estimate.

4 more units on the way — expected 21-07-2026. Orders beyond current stock are reserved from incoming stock and shipped as soon as they arrive.

Items may ship from multiple warehouses at no extra cost.

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 ERR4708R drive belt tensioner do?

The ERR4708R automatic drive belt tensioner maintains correct tension on the auxiliary belt of the 2.5L 300TDi engine, driving the alternator, water pump and power steering pump. Its spring-loaded mechanism compensates for belt stretch automatically, removing the need for manual belt adjustment.

What are the symptoms of a worn belt tensioner?

A worn drive belt tensioner typically causes belt squeal, a rattle from the front of the 300TDi engine, or belt slip that can affect charging and power steering. The spring and pulley bearing wear with age, so a rough-feeling or loose pulley usually means the tensioner needs replacing.

Which models does the ERR4708R tensioner fit?

The ERR4708R fits the 2.5L 300TDi engine on the Defender (1987-2006), Discovery 1 from VIN MA081992 and Range Rover Classic from VIN JA610294. It's the automatic ancillary drive tensioner, so check your engine is a 300TDi and not the earlier 200TDi before ordering.