★★★★★ 5
Item is sturdy
Great item. The quality is amazing too
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 8, 2025
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch CanSKU: 81 0812 UPC: 024844401366 K&N 2020 2025 Chevrolet Silverado GMC Sierra 2500 3500 HD 6. 6L Oil Separator Catch Can 81 0812 The K&N 81 0812 Air Oil Separator captures blow by oil in a 6oz high capacity reservoir to shield your 6. 6L engine and intake tract from contamination. Designed for 2020 2025 Chevy Silverado 2500 HD 3500 HD and GMC Sierra 2500 HD 3500 HD models it prevents power loss and detonation while reducing oil buildup. Quick 30 minute
Quick Dispatch:
Your K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can 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 K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can 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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4.1 ★★★★★
Based on 2287 reviews
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Product Reviews
★★★★★ 5
Good quality
Appeared to be better quality than the origional.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
★★★★★ 5
Cabin filter
Fits perfect
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Reviewed in the United States on July 17, 2025
★★★★★ 5
Perfect fit, solved steering pump noise
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
★★★★★ 5
Works great
Worked great and easy to install
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Reviewed in the United States on March 21, 2026
