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catalyst converter WALKER 20556 — no image available

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Specs, fitment data and pricing remain accurate.
BrandWALKER
MPN20556
OE refs3
SKU0013-20556
GTIN / EAN3277490205568

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Details

SpecificationValue
BrandWALKER
Categorycatalyst converter
Length [mm]730 mm
Weight [kg]4,510 kg

OE/OEM numbers (3)

Search by this OE number to find compatible parts

Where this part fits

Original-fit position for OE 1731HP. The red ring marks where this part installs on the vehicle.

PART — Others
OthersPosition main

About this product

Sourced from WALKER, this catalyst converter (20556) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Length [mm]: 730 mm, Weight [kg]: Copper, 510 kg, Code Letter: 92, Supplementary Article/Info 2: 515, Guarantee: Cast Iron — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit PEUGEOT models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 04.3017, 1612916280, 1731HP, 1731T4 and 16 more. Matching these numbers confirms a like-for-like replacement with no loss of function. WALKER 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.

About WALKER

Walker, part of the Tenneco group, is a well-established manufacturer of exhaust system components with decades of engineering experience. Walker specialises in catalytic converters, diesel particulate filters, exhaust pipes, silencers, and flexible connectors. As a supplier meeting strict European emission regulations, Walker products are designed for precise fitment and optimal exhaust gas treatment. With extensive vehicle coverage and products engineered to restore factory exhaust performance, Walker is a dependable choice for exhaust system repairs across all major European vehicle brands.

Suitable cars

Equivalent products (22)

Show all 22 OE numbers
AS28686
ASSO36.0038
EECPT6011
EECPT6011T£154.99
EECPT6073T
EUROREPAR1612916280
FENNOP476CAT
FONOS20556
FONOS28686
HJS96 22 3062
HJS96 22 4062
IMASAF56.30.43
KLARIUS321569
KLARIUS322225
KLARIUS322226
MTS04.3017
QUINTON HAZELL322226
QUINTON HAZELL36.0038
VENEPORTEPG45721K
WALKER20556£476.99
WALKER28686£267.99

catalyst converter WALKER 20556compatible car models

Car modelsPEUGEOT: 307 (3A/C), 307 Break (3E), 307 CC (3B), 307 SW (3H)
Engines1.6 16V
Year of manufacture2000-2012
Manufacturer article number (MPN)20556
OE part numbers1731HP, 1731T4, 1731T5
Compatibility check

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Description and what's included

WALKER 20556 catalyst converter. Code Letter: 92. Guarantee: 3. Length [mm]: 730 mm. Supplementary Article/Info 2: 515. Weight [kg]: 4,510 kg

What's included:
  • 1x catalyst converter
Shipping, returns, warranty

Free UK delivery on orders over £99.00. Express and standard shipping available.

  • Standard delivery: 2-5 business days
  • Express delivery: 1-2 business days
  • 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 catalyst converter compatible with my car?

This catalyst converter fits PEUGEOT 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 WALKER catalyst converter have?

This WALKER catalyst converter has the following specifications: Length [mm]: 730 mm; Weight [kg]: 4,510 kg; Code Letter: 92; Supplementary Article/Info 2: 515; Guarantee: 3. Check the full specifications table above for complete details.

What OE part numbers does this catalyst converter replace?

This catalyst converter replaces OE part numbers: 1731HP, 1731T4, 1731T5. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.

How much does a catalyst converter cost?

This WALKER catalyst converter is available for £476.99. Catalyst converter prices vary depending on brand, specifications, and vehicle compatibility. WALKER parts offer a balance of quality and value, backed by our 14-day money-back guarantee.

How do I know when to replace my catalyst converter?

Regular inspection of your catalyst converter 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 catalyst converter?

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 catalyst converter fitted by a professional mechanic.

Can I use this part as a replacement for OE 1731HP?

Yes, this WALKER catalyst converter is a direct replacement for OE part number 1731HP. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.

Is the WALKER 20556 the same as the WALKER 15870?

No, while both are catalyst converter parts, they are different products. The WALKER 20556 has Length [mm]: 730 mm, Weight [kg]: 4,510 kg, Code Letter: 92. The WALKER 15870 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.

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