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      06-12-2021, 11:49 PM   #1
ONEof500
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Bosch high power spark plug vs regular

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Need to by new plugs. Any difference other than price?

ZMR5T99330 = high power "BMW plugs" at 24.00 each

ZR5T99330A = Bosch "OE" at 6.00 each

What's the deal?
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      06-13-2021, 07:14 AM   #2
TopJimmy
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Please double check available Bosch/BMW part numbers at FCP Euro...

No tune = stock plugs
Stg1/2 tunes = NGK 97506
Hotter tunes = hi power plug (only if tuner requests)

Same with gaps, stock is 32-31, stages get 23-21, and if tuner asks you might do 18 (0.018"). Most NGK users gap 0.023"
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      06-13-2021, 09:55 AM   #3
ONEof500
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Quote:
Originally Posted by TopJimmy View Post
Please double check available Bosch/BMW part numbers at FCP Euro...

No tune = stock plugs
Stg1/2 tunes = NGK 97506
Hotter tunes = hi power plug (only if tuner requests)

Same with gaps, stock is 32-31, stages get 23-21, and if tuner asks you might do 18 (0.018"). Most NGK users gap 0.023"
I have. Per real OEM, turners etc the Bosch high power = BMW branded = ZMR5TPP330

The OM Bosch substitution = ZR5TPP330A also known as Bosch 8165 double platinum. Not described as high power.
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      06-13-2021, 10:30 AM   #4
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Aren't they the same exact plug? One is just BMW branded.. that's what I've always assumed.
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      06-13-2021, 01:19 PM   #5
ONEof500
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Quote:
Originally Posted by rborane View Post
Aren't they the same exact plug? One is just BMW branded.. that's what I've always assumed.
That's the logical conclusion. Just wondering if anyone knows of a definitive difference. One made in China vs Germany? The high power description is the only one I can find along with M in the part number.
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      06-19-2021, 06:17 PM   #6
ONEof500
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To add to the knowledge base: As I have an extended warranty I decided to go with the exact plug spec'd for the car and picked them up at the dealer. After inspecting the plug the ZMR5T99330 part number is engraved on the plug and it also says Bosch Germany on the plug. So if inspected you can tell the difference at a minimum between the M and non M plug. Are they functionality different that is still unknown. The M plug is described as high powered whatever that means.
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