Porsche 911 964 993 G50 Transmission Billet Side Cover (TRA 950 301 312 01 BSC PMS)

Porsche 911 964 993 G50 Transmission Billet Side Cover (TRA 950 301 312 01 BSC PMS)

Marsoni

M251S

$220.43

Get it in 3 business days with 1 day shipping. Friday, May 29

Porsche 911 964 993 G50 Transmission Billet Side Cover (TRA 950 301 312 01 BSC PMS)1987 1998 Porsche 911 Carrera 3. 2L 964 993 6 Speed Non Turbo Our Aluminum Billet Side Cover Increases Transmission Case Structural Rigidity And Eliminates Ring To Pinion Gear Deflection. This Greatly Reduces Ring& Pinion Wear And Minimize The Chance Of Failure. Porsche Addressed The Weakness In Their Original Design Of The 1987 1989 G50 Transmissions And Elected To Increase Side Cover Rigidity For The 964 G50 And Subsequently The 993 G50. Increased

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Definitely better than the old plugs that probably had 80k miles on them. The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine. Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.

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Reviewed in the United States on April 27, 2026

Verified Purchase

Britincali

Bozeman, US

★★★★★ 5

Upgrade from OEM

After seeing a quite ludicrous $403 quote to change 4 spark plugs in a Mazda3 I decided to show my son how easy it is. These were an upgrade from OEM parts. They were gapped perfectly for the car. They took 20mins to fit and work fine.

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Reviewed in the United States on February 11, 2026