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Spark Plug DENSO W20EP-U OE Ref 12121338145

Key Specification:
  • Connector type: Removable SAE
  • Diameter [mm]: 14
  • EAN: 042511030435
  • for OE number: 09482-00392
  • Gross Weight [kg]: 0.059
Sale
£ 23
£ 19.17 excl. VAT
In Stock
SKU:DENSO W20EP-U
BrandDENSO
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Connector type
Removable SAE
Diameter [mm]
14
EAN
042511030435
for OE number
09482-00392
Gross Weight [kg]
0.059
OEM Reference number
12121338142
Packing Unit
1
Spanner Size
20.6
Spark Plug
1 - Earthed Electrode
Spark Plug
Nickel Middle Electrode
Supplementary Info
3043 - D4
Supplementary Info
W20EP
Supplementary Info
SPARK PLUG
Supplementary Info
JP
Thread Length [mm]
19
Tightening Torque [Nm]
22
Weight [kg]
0.056

Find the Right Spark Plug DENSO OE Ref 12121338145 for Your ALPINA, AUDI, AUSTIN, AUSTIN-HEALEY, BMW

Fitting a ALPINA, AUDI, AUSTIN, AUSTIN-HEALEY, BMW that needs a new Spark Plug DENSO OE Ref 12121338145? This one is built by DENSO to OEM reference 12121338142, so it slots in as a straight swap for the original part — no modifications, no guesswork.

It's listed under DENSO part number W20EP-U, EAN: 042511030435, which you can cross-check against your old part before ordering to be sure it's the right fit.

  • 3043 - D4W20EPSPARK PLUGJP

Before You Order

Double-check fitment against OEM reference 12121338142, or run your registration through our vehicle lookup tool — some ALPINA, AUDI, AUSTIN, AUSTIN-HEALEY, BMW models share a platform across several years, so it's worth confirming rather than assuming.

Not quite the right one? The full Ignition & Preheating range has other options worth a look.

  1. Berry
    12 Nov, 2025
    elderly car so really pleased that the part could be supplied :-) Correct part arrived swiftly - excellent - thank you
  2. Edward & Susan
    20 OCT, 2025
    These guys were real helpful when I was looking for an EGR valve. Great communications and fast delivery, the valve did exactly as It was meant to do and it was a lot cheaper than everywhere else I looked. I'll be using eAuto Parts again. Top banana.
  3. Charlie
    27 AUG, 2025
    eAuto Parts made me happy because it only took 2 minutes to order the part and at a very good price, also very quick delivery, will definitely deal with them again.
  4. Adam Taylor
    12 May, 2025
    Quick enquiry response, easy buying and quick delivery. Quality of goods was good and fitted with no problem (Suzuki bonnet hinges.) recommended.
  5. Helena Garcia
    2 January, 2025
    The correct part was rapidly identified and located, and was despatched promply to my chosen repairer in time for the work to be done on schedule. Very pleased with the service and will be using eAuto Parts again.