Spark plug Bosch or OEM Volkswagen

Spark plug Bosch MB - $26 AUD each (part SPVA6SIP80)

Plugs are by BOSCH. Post this job, it runs a lot better, and I mean a loooot!

if you want to save a bit and still want some quality get bosch plugs those are good too, I’ve used them before and they were pretty good as well.

The bosch plugs can be found at autozone or O'Reilly's for about 18 bucks each. Cant recall the exact spec, but vw uses the Bosch plugs stock, so its a direct oe swap.

Replace the spark plug with a Bosch. See if it will start and run.

Took original plugs out at 50K miles. Not awful but electrode partially rounded with increased gaps. Stock plugs are Bosch and apparently copper core, so I replaced with same. Recommended gap is 0.043'' Added anti-sieze to threads for easier removal next time.

I’ve done an oil change as well as swapping the spark plugs and coils for brand new ones. The roughness persists!

I ended up checking the ignition timing again, put in a new coil, new knock sensors, put in another fresh set of plugs, set the DPR MA to +5, and I failed my emissions test with the same results.

when I worked for a Chevy dealer we hated Bosch plugs. Chevy's just don't seem to like them, they were often the culprit in misfire diagnosis.

Never use the Bosch ones for the E46s. Just not working right