ERR6439G - Tensioner by DaycoEngine Part Land Rover Range Rover Discovery, Range Rover

ERR6439G - Belt Tensioner – V8

- €78,70

€78,70

€78,70 - €78,70

€78,70

OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.

Brand Dayco

Drive Belt Tensioner for the 4.0L and 4.6L V8 petrol engines, part of the auxiliary (serpentine) belt drive.

The spring-loaded tensioner maintains correct tension on the auxiliary drive belt through an automatic pivoting arm and pulley, ensuring reliable drive to the engine accessories and compensating for belt stretch. A worn tensioner allows belt slip, squeal or premature belt wear.

Vehicle Model Land Rover Discovery 2 1998-2004 (L318)
Range Rover Classic 1994-2001 (P38)

Fitment Notes DISCOVERY 2 1998-2004 — 4.0L V8 EFI Petrol
RANGE ROVER P38 1994-2001 — 4.0L & 4.6L V8 EFI Petrol, from VIN XA410482

Alternative Codes

ERR6439ERR6439GAPV1014ERR3562

In stock 2 units

1 · Gouda 1 · Drachten

Express delivery available

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.

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 is the ERR6439 belt tensioner and what does it do?

The ERR6439 is the automatic drive belt tensioner for the 4.0L and 4.6L Rover V8 petrol engine. It's spring-loaded and keeps the auxiliary serpentine belt under correct tension through a pivoting arm and pulley, compensating for belt stretch and keeping the accessory drive running quietly.

Which Land Rovers does the ERR6439 tensioner fit?

The ERR6439 fits the Discovery 2 (1998-2004) with the 4.0L V8 EFI petrol engine and the Range Rover P38 (1994-2001) with 4.0L and 4.6L V8 EFI petrol. On the P38 it applies from VIN XA410482, so check your chassis number against that break.

What are the signs the V8 belt tensioner needs replacing?

A failing tensioner on the V8 typically shows as belt squeal, a rattle or knock from the front of the engine, or visible belt slip and premature belt wear. The internal spring or bearing wears over time and tension drops. It's usually renewed together with the drive belt.

Can the ERR6439 tensioner be replaced at home?

Replacing the ERR6439 tensioner is typically a DIY-friendly job with basic hand tools. The belt is released by pivoting the tensioner arm with a spanner or breaker bar to relieve spring load, then unbolting the unit. Note the serpentine belt routing before removal so it goes back correctly.