ESR1703 - Transmission Oil Cooler – V8 – M20 x 1.5

- €430,00

€430,00

€430,00 - €430,00

€430,00

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

Transmission Oil Cooler for the transmission cooling circuit on V8 Petrol applications.

The cooler regulates automatic or manual transmission fluid temperature by routing fluid through a dedicated heat exchanger, protecting transmission components from heat-related wear. Positioned within the engine bay cooling system, it receives fluid from the transmission and returns it at reduced temperature.

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

Fitment Notes DISCOVERY 1 — V8 Petrol, manual or automatic transmission
RANGE ROVER CLASSIC — V8 Petrol, manual or automatic transmission
Thread: M20 x 1.5.

Alternative Codes

ESR1703

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 days — contact 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 ESR1703 transmission oil cooler do?

The ESR1703 transmission oil cooler regulates transmission fluid temperature on V8 petrol Discovery 1 and Range Rover Classic models. It routes fluid through a heat exchanger and returns it cooler, protecting the gearbox from heat-related wear. It suits both manual and automatic transmissions.

Which vehicles does this cooler fit?

The ESR1703 fits the V8 petrol Discovery 1 and Range Rover Classic, in both manual and automatic transmission applications. It mounts in the engine bay cooling system. Confirm your model has the V8 petrol engine before ordering, as cooler specifications differ by drivetrain.

What thread fitting does the ESR1703 use?

The ESR1703 transmission oil cooler uses an M20 x 1.5 thread for its fluid connections. Match this against your existing cooler unions and adapters before fitting to the Discovery 1 or Range Rover Classic V8.

What are the signs a transmission oil cooler needs replacing?

A failing transmission oil cooler typically leaks fluid, corrodes, or becomes internally blocked, causing the transmission to overheat on the V8 Discovery 1 or Range Rover Classic. Overheated fluid accelerates gearbox wear, so check for leaks and reduced cooling if temperatures climb.