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Catalytic Converter WALKER 20851
catalyst converter WALKER 20851. Fits 18 car models (AUDI, SEAT, SKODA +1), 2003–2016. Replaces 10 OE numbers.

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Specification. From the manufacturer's data.
- Brand
- WALKER
- Category
- catalyst converter
- Length [mm]
- 1140 mm
- Weight [kg]
- 5.6 kg
- MPN
- 20851
- SKU
- 0013-20851
- GTIN / EAN
- 3277490208514
- What's included
- 1x catalyst converter
OE numbers. The originals this part replaces.
Numbers the vehicle makers and other brands use for this part. Only a confirmed OE number links to its own page; other brands' equivalents are under “Equivalent products”.
- AUDI / SEAT / SKODA / VW1K0254500BX
- AUDI / SEAT / SKODA / VW1K0254503MX
- AUDI / SEAT / SKODA / VW1K0254505RX
- AUDI / SEAT / SKODA / VW1K0254507GX
- SEAT / SKODA1K0254508SX
- SEAT / SKODA / VW1K0254509KX
- SEAT / SKODA / VW1K0254510HX
- AUDI / SEAT / SKODA / VW1K0254510JX
- AUDI / SEAT / SKODA / VW1K0254510NX
- AUDI / SEAT / SKODA / VW1K0254510RX
Where this part fits
Original-fit position for OE 1K0254509KX. The red ring marks where this part installs on the vehicle.

Equivalent products. They fit in the same place.
4 available · 33 numbers
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All 33 cross-reference numbers
Numbers other makers give for this part. They are aftermarket numbers, not the vehicle maker's OE numbers; a linked number is one we sell.
- AS 42230
- AS 42248
- ASSO 58.0052
- BM CATALYSTS BM91391H
- BOSAL 090-037
- BOSAL 090-556
- BOSAL 090-706
- EEC VK6088T
- ERNST 753241
- ERNST 759106
- EUROREPAR 1609156780
- FENNO P757CAT
- FENNO P9277CAT
- FONOS 20851
- HJS 96 11 4224
- IMASAF 13.05.33
- KLARIUS 321800
- KLARIUS 322611
- LRT 7082
- LRT 8009
- LRT 8011
- MAGNAFLOW 60207
- MAGNAFLOW 78817
- MTS 04.3934
- MTS 04.4285
- QH Benelux 321817
- QUINTON HAZELL 58.0052
- QUINTON HAZELL 321800
- QUINTON HAZELL 322611
- SIGAM 22125
- SIGAM 60180
- VENEPORTE ST63260K
- WALKER 20851
Compatible cars. AUDI, SEAT, SKODA +1, 18 models.
Matched from the manufacturer's data. Production years 2003–2016.
catalyst converter for AUDIcatalyst converter for SEATcatalyst converter for SKODAcatalyst converter for VW
| Model | Engines | Years |
|---|---|---|
| AUDI3 models | ||
| AUDI A3 (8P1) | 1.6 | 2003–2013 |
| AUDI A3 Convertible (8P7) | 1.6 | 2008–2013 |
| AUDI A3 Sportback (8PA) | 1.6 | 2004–2015 |
| SEAT4 models | ||
| SEAT ALTEA (5P1) | 1.6 | 2004–2015 |
| SEAT ALTEA XL (5P5, 5P8) | 1.6, 1.6 Multifuel | 2006–2015 |
| SEAT LEON (1P1) | 1.6, 1.6 MultiFuel | 2005–2013 |
SEAT1 more model
| Model | Engines | Years |
|---|---|---|
| SEAT TOLEDO III (5P2) | 1.6 | 2004–2009 |
SKODA2 models
| Model | Engines | Years |
|---|---|---|
| SKODA OCTAVIA II (1Z3) | 1.6, 1.6 LPG, 1.6 MultiFuel | 2004–2013 |
| SKODA OCTAVIA II Combi (1Z5) | 1.6, 1.6 MultiFuel | 2004–2013 |
VW9 models
| Model | Engines | Years |
|---|---|---|
| VW CADDY III Box Body/MPV (2KA, 2KH, 2CA, 2CH) | 1.6, 1.6 BiFuel | 2004–2016 |
| VW CADDY III MPV (2KB, 2KJ, 2CB, 2CJ) | 1.6 | 2004–2016 |
| VW GOLF PLUS V (5M1, 521) | 1.6, 1.6 MultiFuel | 2004–2013 |
| VW GOLF V (1K1) | 1.6, 1.6 MultiFuel | 2003–2010 |
| VW GOLF V Variant (1K5) | 1.6, 1.6 MultiFuel | 2007–2009 |
| VW GOLF VI (5K1) | 1.6, 1.6 MultiFuel | 2008–2014 |
| VW GOLF VI Variant (AJ5) | 1.6, 1.6 BiFuel | 2009–2014 |
| VW JETTA III (1K2) | 1.6, 1.6 MultiFuel | 2004–2013 |
| VW TOURAN (1T1, 1T2) | 1.6, 1.6 BiFuel | 2003–2011 |
Always verify compatibility with your vehicle before ordering.
More about this part. Related categories and similar parts.
WALKER
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Common OE numbers for this part
Common original equipment numbers linked to replacement-part pages.
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£5.99
Standard delivery
Delivery estimates depend on current stock availability.
£50.00
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14 days
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2-year warranty against manufacturing defects on all parts, counted from delivery. 14-day money-back guarantee if the part doesn't fit your vehicle. Delivery terms
We ship from the EU to 201 countries. Deliveries within the EU carry no customs charges; outside the UK and the EU, the destination country may charge import duties and taxes, paid on delivery. Delivery times and prices by country
Delivery times to EU countries (working days)
Austria 4–7, Belgium 4–7, Bulgaria 5–9, Croatia 5–9, Cyprus 4–19, Czechia 4–7, Denmark 4–8, Estonia 3–4, Finland 6–10, France 5–8, Germany 3–5, Greece 6–10, Hungary 4–7, Ireland 5–9, Italy 5–9, Latvia 2–3, Lithuania 2–3, Luxembourg 4–7, Malta 4–9, Netherlands 4–7, Poland 3–6, Portugal 6–10, Romania 4–8, Slovakia 4–7, Slovenia 4–8, Spain 6–9, Sweden 5–10