I used Bosch plugs in mine about 3 months ago and I couldn't be happier.
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.
Bosch spark plugs aren't bad, per se, but they're not really anything special.
I recently just replaced my spark plugs they were past due. So I bought the OE Bosch 9683. The engine runs fine, starts easy, no misfiring, no rough running. But after the plug change I am getting much worse millage.
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
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