NTC1666 | Intermediate Exhaust Silencer - 2.5L Turbo Diesel | Defender 1987-2006
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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: NTC1666 - Intermediate Exhaust Silencer
NTC1666 is an intermediate exhaust silencer fitted to Defender vehicles equipped with the 2.5L 4-cylinder turbo diesel engine. It sits in the centre of the exhaust run between the front and rear sections and provides the primary mid-system noise attenuation. The silencer is matched to the flow and back-pressure characteristics of the turbocharged 2.5L engine on 110 and 130 wheelbase Defenders to maintain expected exhaust performance.
Please note: Not for use with the Tdi engines.
Use the compatibility data below to confirm fitment against your V.I.N.
What does NTC1666 do?
The NTC1666 intermediate silencer provides mid-system noise attenuation for Defender models fitted with the 2.5L turbo diesel powerplant. Installed in the centre of the exhaust run, this silencer reduces overall exhaust noise levels and helps manage the acoustic characteristics produced by the turbocharged 2.5L engine. Replacement of a damaged or corroded intermediate silencer restores the exhaust path and acoustic damping required for road use and emissions routing; when fitting, confirm the wheelbase and engine variant to avoid mismatch with non-turbo or Tdi exhaust components.
Compatibility
- Defender (1987-2006) - 2.5L 4 Cyl Turbo Diesel (110, 130 wheelbase)
Frequently Asked Questions
The NTC1666 intermediate silencer fits centrally in the exhaust run of 2.5L turbo diesel Defenders to provide mid-system noise attenuation and manage the acoustic characteristics of the turbocharged engine. It is matched to the flow and back-pressure requirements of the 2.5L 4-cylinder turbo diesel to help maintain expected exhaust performance on 110 and 130 wheelbase models.
| Model | Variant |
|---|---|
| Land Rover Defender (1987-2006) | Rear - 2.5L 4 Cyl Turbo Diesel (110, 130 wheelbase) |
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 intermediate silencer if it is damaged, corroded or causing excessive noise or exhaust leaks. Inspect the silencer during routine servicing and replace to restore the correct exhaust path and acoustic damping.
- 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.