TD5 4 Bar MAP Sensor – Genuine Bosch | Defender & Discovery 2
£99.28 inc. UK VAT
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Genuine Bosch 4-bar MAP sensor for tuned Defender TD5 and Discovery 2 TD5 engines where the ECU has been calibrated for 4-bar manifold-pressure scaling. The wider pressure range allows the ECU to continue reading manifold pressure on higher-boost setups instead of the standard sensor reaching its measurement limit, giving the remap a usable pressure signal throughout the calibrated range.
Fitment Notes
The ECU map must be written for a 4-bar MAP sensor. This is not a direct upgrade for a standard TD5 calibration. Fitting it without the correct sensor scaling will make the ECU interpret manifold pressure incorrectly and can cause poor running. For a standard TD5 ECU calibration, use the Bosch MHK100640G TD5 MAP sensor instead.
4 bar refers to absolute manifold pressure, not 4 bar of boost pressure. Sensor measurement range and the engine’s permitted boost level are separate; boost targets and limits are determined by the ECU calibration and the hardware fitted to the engine.
Vehicle Fitment
- Defender TD5 with ECU calibration specifically scaled for a 4-bar MAP sensor
- Discovery 2 TD5 with ECU calibration specifically scaled for a 4-bar MAP sensor
| Weight | 0.1 kg |
|---|---|
| Dimensions | 10 × 10 × 5 cm |
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Returns – quick FAQs
How long do I have to return an item?
For UK and EEA consumers, statutory change-of-mind cancellation rights also apply: tell us within 14 days of receiving your order, then return the goods within the following 14 days.
Which products qualify for 60-day returns?
Products purchased for £250 or more are not automatically covered, although we may agree to accept them for return at our discretion. Eligibility is based on the price of each individual product rather than the total order value.
Is there a charge for an extended return?
This charge does not apply where the return is being made under your statutory cancellation rights.
Who pays return carriage?
If an item is faulty, damaged or incorrectly described, contact us first. Where return is reasonably required, we will normally provide a prepaid return service or cover reasonable return costs agreed with us.
What condition must an extended return be in?
Can I fit a part and then return it?
Once a part has been fitted or an attempt has been made to fit it, it may be marked, contaminated, damaged or otherwise unsuitable for resale as a new part. Fitted or used goods will not normally qualify for our voluntary extended returns policy.
Where statutory cancellation rights apply, handling beyond what is reasonably necessary to inspect the goods may result in a reduction to your refund if it has reduced their value.
What if the item is faulty?
Are any items excluded from 60-day returns?
Extended returns must also meet the condition requirements above. Statutory exclusions and any separate statutory rights continue to apply as set out in our full Terms & Conditions.
How do I start a return?
Please include your order number and a brief reason for the return. Do not send anything back until you have received the appropriate return instructions.
Buy with confidence: all new parts sold by Twinwoods 4x4 include at least 12 months manufacturer warranty against defects in materials and workmanship under normal use.
Some products and brands may include a longer warranty period where this is provided by the manufacturer. Where applicable, this will normally be stated on the individual product page or covered by the manufacturer’s own warranty terms.
Warranty cover applies to manufacturing defects. It does not cover misuse, incorrect fitting, competition use unless stated, contamination, modification, damage during installation, normal wear and tear, or failure caused by an unrelated vehicle fault. For certain components, proof of professional fitment may be required.
Warranty claims may require the part to be returned for inspection and/or supplier testing before the claim is accepted. Any advance replacement is discretionary.
Warranty remedies relate to the part itself, meaning repair or replacement, or refund if those are not possible. Warranty does not cover labour, removal or refitting, diagnostics, consumables, travel or other incidental costs.
This warranty is in addition to your legal rights and does not reduce those rights.
For full details, please see our Terms and Conditions.







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