M Performance Rear Diffuser, Carbon Fiber - G20 330i/M340i

M Performance Rear Diffuser, Carbon Fiber - G20 330i/M340i

Marsoni

M251S

$510.00

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

M Performance Rear Diffuser, Carbon Fiber - G20 330i/M340i100 percent high tech. 100 percent pure motorsport character. 100 percent enthusiasm. The M Performance rear diffuser is made of either carbon or high quality PUR, depending on the style you choose. Especially the distinctive bars provide with their angular look for an even sportier look. The rear diffuser is perfectly tailored to the vehicle and impressively enhances the masculine appearance of the vehicle with its distinctive design.

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Fast: 2-3 business days
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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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Installed this o-ring kit on a 2009 Honda Odyssey. The steering pump was making noise and you could see bubbles in the fluid revivor when the engine was idling indicating a potential air leak from where the hoses attach to the pump. The most difficult part was finding the right 10mm wrench that would allow me to access the lower hose mounting bolt without removing the belt or pump pulley. I wound up taking an old wrench, heated it with a torch, and bent it in a vice to get the right fit. I did order a ratcheting, flex head wrench but while waiting for it to be delivered I was able to make something work. Overall, the o-ring kit worked great, the o-rings seem high quality and this fixed my issue. If you don't already have some, make sure to order the power steering fluid required for Asian/Honda vehicles when you order these o-rings.

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Reviewed in the United States on February 24, 2025

Verified Purchase

Amazon Customer

Lake Worth, US

★★★★★ 5

Works great

Worked great and easy to install

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Reviewed in the United States on March 21, 2026

Verified Purchase

Will

Fort Morgan, US

★★★★★ 5

2007 Honda Accord coupe

Perfect fit for a 2007 accord coupe or sedan. Fixed a noisy power steering pump straight away on a 240,000 mile car. Easy DIY fix

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Reviewed in the United States on January 29, 2026

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Brian

Bozeman, US

★★★★★ 4

No issues

Great aftermarket o ring. If for whatever reason OEM isn’t possible, these o rings will work perfectly fine. Had no issues installing into power steering system. Still would recommend Honda o rings if you can because they are also cheap.

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Reviewed in the United States on March 18, 2026

Verified Purchase

Jeff in Iowa

Houston, US

★★★★★ 5

Fixed noisy and leaking power steering pump

My daughters 2008 Honda Accord 2.4L 4 cylinder that had a very noisy power steering pump which was also starting to leak. I was about to buy a new pump when I found out it might just be leaking from the hoses to the pump. I bought these O rings for the hose connections at the power steering pump, and spent 15 minutes replacing them. Pump is quiet again! The suction hose can develop a leak, letting air get into the pump which creates the loud noises. This fix is all I needed, and was much cheaper and faster than replacing the power steering pump.

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Reviewed in the United States on March 10, 2026