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CP247
Gallery
BrandHART
MPN551 231
OE refs2
SKU5251-551 231
GTIN / EAN5903175124326

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Details

SpecificationValue
BrandHART

OE numbers (2)

Search by this OE number to find compatible parts

Where this part fits

Original-fit position for OE 13631721456. The red ring marks where this part installs on the vehicle.

THROTTLE VALVE SWITCH — BMW Classic 8 E31 — 13 Fuel Preparation System › 13_1449 Mass air flow sensor/ASC
BMW Classic 8 E31 · 13 Fuel Preparation System › 13_1449 Mass air flow sensor/ASCPosition 12

About this product

When sensor throttle position performance matters, the HART 551 231 delivers — built to the same dimensional and material standards as the original part it replaces. Compatible with BMW vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 1363 1721 456, 1363 1726 591. Matching these numbers confirms a like-for-like replacement with no loss of function. HART is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.

Suitable cars

No equivalent parts found.

Sensor Throttle Position HART 551 231compatible car models

Car modelsBMW: 3 Compact (E36), 3 Convertible (E36), 3 Coupe (E36), 3 (E30), 3 (E36), 3 Touring (E36), 5 (E34), 5 (E39), 5 Touring (E34), 5 Touring (E39) (+5 more)
Engines316 g; 318 i; 316 i; 318 is; 518 i; 520 i; 518 g; 730 i, iL V8; 728 i, iL; 840 Ci; 2.8 i; 1.8 i
Year of manufacture1982-2004
Manufacturer article number (MPN)551 231
OE part numbers1363 1721 456, 1363 1726 591
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Description and what's included

HART 551231 . 551 231

What's included:
  • 1x Sensor Throttle Position
Shipping, returns, warranty

Free UK delivery on orders over £99.00. Tracked standard shipping.

  • Standard delivery: 5–9 business days
  • Order before 5pm — ships the next working day
  • Free returns within 14 days
  • All parts backed by manufacturer warranty

Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.

Frequently Asked Questions

Is this Sensor Throttle Position compatible with my car?

This Sensor Throttle Position fits BMW vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.

What specifications does this HART Sensor Throttle Position have?

The package includes the Sensor Throttle Position as described in the specifications above. Check the "What's included" section for a full list of components. If mounting hardware or accessories are required, they will be listed separately.

What OE part numbers does this Sensor Throttle Position replace?

This Sensor Throttle Position replaces OE part numbers: 1363 1721 456, 1363 1726 591. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.

How much does a Sensor Throttle Position cost?

This HART Sensor Throttle Position is available for £13.99. Sensor Throttle Position prices vary depending on brand, specifications, and vehicle compatibility. HART parts offer a balance of quality and value, backed by our 14-day money-back guarantee.

How do I know when to replace my Sensor Throttle Position?

Regular inspection of your Sensor Throttle Position is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.

What tools do I need to replace a Sensor Throttle Position?

Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Sensor Throttle Position fitted by a professional mechanic.

Can I use this part as a replacement for OE 1363 1721 456?

Yes, this HART Sensor Throttle Position is a direct replacement for OE part number 1363 1721 456. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.

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