STC3135 | Heater Matrix - With Air Conditioning | Discovery, Range Rover Classic
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: STC3135 - Heater Matrix with Air Conditioning
STC3135 is a heater matrix for vehicles fitted with air conditioning. Fitted inside the vehicle heater box, this unit transfers heat from the engine coolant into the ventilation airflow to warm the cabin; coolant flows through the matrix tubes while the heater blower forces air across the tube-and-fin assembly. It is manufactured for heater assemblies configured alongside an air conditioning evaporator and interfaces with other HVAC components, so correct VIN-specific fitment is required.
Use the compatibility data below to confirm fitment against your V.I.N.
Common indicators of a failing heater matrix include a noticeable coolant smell inside the vehicle, damp carpets or footwells, reduced cabin heating, or traces of coolant around the heater box. Replacement restores proper coolant flow through the heater circuit and removes a potential source of cabin contamination.
Compatibility
- Discovery 1 - From VIN MA081992
- Range Rover Classic (1992-1994) - From VIN JA610294
Frequently Asked Questions
The STC3135 heater matrix provides cabin heating by transferring engine coolant heat into the ventilation airflow. It is the core heat-exchange element mounted within the heater box on vehicles fitted with air conditioning and works alongside the evaporator and other HVAC components. Failure commonly presents as coolant smell in the cabin, damp carpets or reduced heating effectiveness.
| Model | Variant |
|---|---|
| Land Rover Discovery 1 | From VIN MA081992 |
| Land Rover Range Rover Classic (1992-1994) | From VIN JA610294 - With Air Conditioning |
If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.
Replace the heater matrix if there is evidence of coolant leaking into the cabin (coolant odour, damp carpets or visible fluid) or if heating performance is noticeably reduced. Inspect the heater matrix during HVAC or cooling-system repairs and confirm VIN-specific fitment before installation.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
- Z8 products are normally supplied by Allmakes.
All products and accessories available on LRDirect.com come with a 2-year warranty.