★★★★★ 5
Perfect fit
Perfect fit for my Accord
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Reviewed in the United States on February 15, 2026
BMW G20/G21 3 SERIES LCI 340I GLOSS BLACK REAR DIFFUSER (SQUARE EXHAUST)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
BMW G20/G21 3 SERIES LCI 340I GLOSS BLACK REAR DIFFUSER (SQUARE EXHAUST)[additional] 2022+ BMW G20 3 Series LCI M Sport 2022+ BMW G21 Touring 3 Series LCI M Sport [ additional] BLAK by CT brings this BMW G20 3 Series LCI GLOSS BLACK rear diffuser for the 340i, made from high quality ABS plastic & finished in GLOSS BLACK. Please Note: This product is ONLY compatible with M Sport Bumpers
Quick Dispatch:
Your BMW G20/G21 3 SERIES LCI 340I GLOSS BLACK REAR DIFFUSER (SQUARE EXHAUST) orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your BMW G20/G21 3 SERIES LCI 340I GLOSS BLACK REAR DIFFUSER (SQUARE EXHAUST) ships.
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.5 ★★★★★
Based on 1038 reviews
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Product Reviews
★★★★★ 4
That it filters out debris in the air from going into the engine / cabin
It’s an air filter seems to be doing what it is designed for
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Reviewed in the United States on March 9, 2026
★★★★★ 5
Wonderful
Excellent
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Reviewed in the United States on January 15, 2026
★★★★★ 5
DIY savings
Saved myself $90!
Fit like a glove great value
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Reviewed in the United States on September 22, 2025
★★★★★ 5
Good
Looks to be good quality. Easy install.
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Reviewed in the United States on September 12, 2025
