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USA
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- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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For Your Every Summer RSVP, with Code: SUMMER15
Description
HKS Super Fire Racing Spark Plug 50003-M40IM Series Super Fire Spark Plugs HKS M Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti carbon build up. 0. 6mm Iridium Alloy Center Electrode Outer Electrode with Platinum Chip Short Type Outer Electrode (Anti Vibration) Thermal Edge Spark Support Gap M Series is recommended for reliable ignition, durability and anti carbon buildup under high load. The Iridium alloy is used
M-Series Super Fire Spark Plugs
HKS M-Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti-carbon build-up.
- 0.6mm Iridium Alloy Center Electrode
- Outer Electrode with Platinum Chip
- Short Type Outer Electrode (Anti-Vibration)
- Thermal Edge
- Spark Support Gap
M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load.
The Iridium alloy is used because of its durability and reliability. On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity. With a high melting point of 2454 degrees C, opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration. The Iridium plugs are available for multiple applications and offered in "colder" heat ranges of 7 and up and specifically for rotary, heat ranges of 9 and up are offered.
Heat Range: NGK # 8
Thread Size: 14mm × 19mm
Wrench Size: 16mm
Fits:
| ACURA | INTEGRA | 1.8 | L4 | B18B1 | 1993 - 1995 | From 7/1993 Thru 9/1995 Production Date | DB7 Chassis | DOHC | Stock Plug/Heat Range: ISO:5 |
| ACURA | INTEGRA | 1.8 | L4 | B18C5 | 1997 - 2001 | From 10/1995 Thru 7/2001 Production Date | DC2/DB8 Chassis | DOHC VTEC | Stock Plug/Heat Range: ISO:7 |
| ACURA | LEGEND | 3.2 | V6 | C32A1 | 1990 - 1998 | From 10/1990 Thru 3/1998 Production Date | KA7/KA8 Chassis | Stock Plug/Heat Range: ISO:6 | |
| ACURA | MDX | 3.5 | V6 | J35A5 | 2003 - 2006 | From 2/2003 Thru 7/2006 Production Date | YD1 Chassis | VTEC | Stock Plug/Heat Range: ISO:5 |
| ACURA | NSX | 3.0 | V6 | C30A1 | 1990 - 2005 | From 9/1990 Thru 12/2005 Production Date | NA1 Chassis | Stock Plug/Heat Range: ISO:6 | |
| ACURA | NSX | 3.2 | V6 | C32B1 | 1997 - 2005 | From 2/1997 Thru 12/2005 Production Date | NA2 Chassis | Stock Plug/Heat Range: ISO:6 | |
| ACURA | RL | 3.5 | V6 | C35A1 | 1996 - 2004 | From 2/1996 Thru 9/2004 Production Date | KA9 Chassis | Stock Plug/Heat Range: ISO:5 | |
| ACURA | RL | 3.5 | V6 | J35A8 | 2004 - 2014 | From 10/2004 Thru 11/2014 Production Date | KB1 Chassis | VTEC | Stock Plug/Heat Range: ISO:6 |
| ACURA | RSX | 2.0 | L4 | K20A2 | 2002 - 2006 | From 7/2001 Thru 2/2007 Production Date | DC5 Chassis | i-VTEC | Stock Plug/Heat Range: ISO:7 |
| ACURA | VIGOR | 2.5 | L5 | G25A1 | 1992 - 1995 | From 1/1992 Thru 2/1995 Production Date | CC2 Chassis | PGM-FI | Stock Plug/Heat Range: ISO:6 |
| AUDI | A3 | 2.0 | ALL | ALL | 2006 - 2007 | From 7/2006 Thru 1/2007 Production Date | GH-8PBWA Chassis | Sportback TFSI | Stock Plug/Heat Range: ISO:6 |
| AUDI | A3 | 2.0 | ALL | ALL | 2007 - 2008 | From 1/2007 Thru 9/2008 Production Date | ABA-8PBWA Chassis | Sportback TFSI | Stock Plug/Heat Range: ISO:6 |
| AUDI | A4 | 1.8 | ALL | ALL | 1997 - 1999 | From 10/1995 Thru 6/1999 Production Date | E-8DADR Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 | 1.8 | ALL | ALL | 1999 - 1999 | From 6/1999 Thru 9/1999 Production Date | GF-8DADR Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 | 1.8 | ALL | ALL | 1999 - 2001 | From 10/1999 Thru 5/2001 Production Date | GF-8DAPT Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 | 1.8 | ALL | ALL | 2001 - 2006 | From 5/2001 Thru 7/2006 Production Date | GH-8EBFB Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 | 2.0 | ALL | ALL | 2005 - 2007 | From 8/2002 Thru 10/2007 Production Date | GH-8EALT Chassis | Stock Plug/Heat Range: ISO:5 | |
| AUDI | A4 | 2.0 | ALL | ALL | 2007 - 2008 | From 10/2007 Thru 3/2008 Production Date | ABA-8EALT Chassis | Stock Plug/Heat Range: ISO:5 | |
| AUDI | A4 QUATTRO | 2.8 | V6 | ALL | 1996 - 1999 | From 10/1996 Thru 5/1999 Production Date | E-8DACKF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 QUATTRO | 2.8 | V6 | ALL | 1996 - 1999 | From 2/1996 Thru 5/1999 Production Date | E-8DAAHF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 QUATTRO | 1.8 | ALL | ALL | 1997 - 1999 | From 2/1996 Thru 5/1999 Production Date | E-8DAEBF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 QUATTRO | 1.8 | ALL | ALL | 1999 - 2001 | From 6/1999 Thru 10/2001 Production Date | GF-8DAPUF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 QUATTRO | 1.8 | ALL | ALL | 2001 - 2002 | From 11/2001 Thru 8/2002 Production Date | GF-8EAMBF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 QUATTRO | 1.8 | ALL | ALL | 2002 - 2005 | From 2/2002 Thru 1/2005 Production Date | GF/GH-8EAMBF Chassis | Wagon | Stock Plug/Heat Range: ISO:6 |
| AUDI | A4 QUATTRO | 1.8 | ALL | ALL | 2002 - 2005 | From 8/2002 Thru 1/2005 Production Date | GH-8EAMBF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 QUATTRO | 3.0 | ALL | ALL | 2002 - 2005 | From 2/2002 Thru 1/2005 Production Date | GF/GH-8EASNF Chassis | Wagon | Stock Plug/Heat Range: ISO:6 |
| AUDI | A4 QUATTRO | 3.0 | ALL | ALL | 2002 - 2005 | From 6/2001 Thru 1/2005 Production Date | GF/GH-8EASNF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A4 QUATTRO | 2.0 | ALL | ALL | 2005 - 2006 | From 2/2005 Thru 2/2006 Production Date | GH-8EBGBF Chassis | TFSI | Stock Plug/Heat Range: ISO:6 |
| AUDI | A4 QUATTRO | 2.0 | ALL | ALL | 2005 - 2006 | From 2/2005 Thru 2/2006 Production Date | GH-8EBGBF Chassis | Wagon TFSI | Stock Plug/Heat Range: ISO:6 |
| AUDI | A4 QUATTRO | 3.2 | ALL | ALL | 2005 - 2007 | From 2/2005 Production Date | GH-8EAUKF Chassis | FSI | Stock Plug/Heat Range: ISO:7 |
| AUDI | A4 QUATTRO | 3.2 | ALL | ALL | 2005 - 2007 | From 2/2005 Thru 10/2007 Production Date | GH-8EAUKF Chassis | Wagon | Stock Plug/Heat Range: ISO:7 |
| AUDI | A4 QUATTRO | 2.0 | ALL | ALL | 2006 - 2007 | From 3/2006 Thru 10/2007 Production Date | GH-8EBWEF Chassis | TFSI | Stock Plug/Heat Range: ISO:6 |
| AUDI | A4 QUATTRO | 2.0 | ALL | ALL | 2006 - 2007 | From 3/2006 Thru 10/2007 Production Date | GH-8EBWEF Chassis | Wagon TFSI | Stock Plug/Heat Range: ISO:6 |
| AUDI | A4 QUATTRO | 2.0 | ALL | ALL | 2007 - 2008 | From 10/2007 Thru 3/2008 Production Date | ABA-8EBWEF Chassis | TFSI | Stock Plug/Heat Range: ISO:6 |
| AUDI | A4 QUATTRO | 2.0 | ALL | ALL | 2007 - 2008 | From 10/2007 Thru 8/2008 Production Date | ABA-8EBWEF Chassis | Wagon TFSI | Stock Plug/Heat Range: ISO:6 |
| AUDI | A4 QUATTRO | 3.2 | ALL | ALL | 2008 - 2008 | From 8/2008 Production Date | ABA-8KCALF Chassis | Wagon | Stock Plug/Heat Range: ISO:7 |
| AUDI | A6 QUATTRO | 2.8 | V6 | ALL | 1995 - 1996 | From 10/1994 Thru 9/1996 Production Date | E-4AAAH/4AAAHF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A6 QUATTRO | 2.8 | V6 | ALL | 1995 - 1996 | From 11/1994 Thru 9/1996 Production Date | E-4AAAHF Chassis | Wagon | Stock Plug/Heat Range: ISO:6 |
| AUDI | A6 QUATTRO | 2.8 | V6 | ALL | 1996 - 1999 | From 10/1996 Thru 8/1999 Production Date | E-4AACKF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A6 QUATTRO | 2.8 | V6 | ALL | 1996 - 1999 | From 10/1996 Thru 8/1999 Production Date | E-4AACKF Chassis | Wagon | Stock Plug/Heat Range: ISO:6 |
| AUDI | A6 QUATTRO | 2.8 | V6 | ALL | 1999 - 2001 | From 9/1999 Thru 10/2001 Production Date | GF-4BAPRF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A6 QUATTRO | 2.8 | V6 | ALL | 1999 - 2001 | From 9/1999 Thru 10/2001 Production Date | GF-4BAPRF Chassis | Wagon | Stock Plug/Heat Range: ISO:6 |
| AUDI | A6 QUATTRO | 2.7 | ALL | ALL | 2001 - 2002 | From 10/2001 Thru 8/2002 Production Date | GF-4BARES Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A6 QUATTRO | 2.7 | ALL | ALL | 2002 - 2004 | From 9/2002 Thru 6/2004 Production Date | GF-4BBESS Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A6 QUATTRO | 3.0 | ALL | ALL | 2002 - 2004 | From 10/2001 Thru 6/2004 Production Date | GF-4BASNF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A6 QUATTRO | 3.0 | ALL | ALL | 2002 - 2005 | From 10/2001 Thru 5/2005 Production Date | GF-4BASNF Chassis | Wagon | Stock Plug/Heat Range: ISO:6 |
| AUDI | A6 QUATTRO | 4.2 | ALL | ALL | 2004 - 2004 | From 7/2004 Production Date | GH-4FBATS Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A6 QUATTRO | 3.2 | ALL | ALL | 2005 - 2006 | From 7/2004 Thru 8/2006 Production Date | GH-4FAUKS Chassis | FSI | Stock Plug/Heat Range: ISO:7 |
| AUDI | A6 QUATTRO | 3.2 | ALL | ALL | 2005 - 2008 | From 6/2005 Production Date | GH-4FAUKS Chassis | Wagon | Stock Plug/Heat Range: ISO:7 |
| AUDI | A6 QUATTRO | 4.2 | ALL | ALL | 2005 - 2011 | From 6/2005 Production Date | GH-4FBATS Chassis | Wagon | Stock Plug/Heat Range: ISO:6 |
| AUDI | A6 QUATTRO | 3.2 | ALL | ALL | 2006 - 2008 | From 8/2006 Thru 1/2009 Production Date | ABA-4FAUKS Chassis | FSI | Stock Plug/Heat Range: ISO:7 |
| AUDI | A8 QUATTRO | 4.2 | ALL | ALL | 1999 - 1999 | From 8/1999 Production Date | GF-4DAQF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A8 QUATTRO | 4.2 | ALL | ALL | 2000 - 2003 | From 9/2000 Production Date | GF-4DAUW Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A8 QUATTRO | 4.2 | ALL | ALL | 2003 - 2006 | From 10/2003 Thru 7/2006 Production Date | GH-4EBFMF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A8 QUATTRO | 4.2 | ALL | ALL | 2004 - 2006 | From 9/2004 Thru 7/2006 Production Date | GH-4EBFML Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A8 QUATTRO | 6.0 | ALL | ALL | 2005 - 2009 | From 3/2005 Production Date | GH-4EBHTF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | A8 QUATTRO | 6.0 | ALL | ALL | 2005 - 2009 | From 3/2005 Production Date | GH-4EBHTIN Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | ALLROAD QUATTRO | 2.7 | ALL | ALL | 2001 - 2002 | From 2/2001 Thru 8/2002 Production Date | GF-4BAREF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | ALLROAD QUATTRO | 2.7 | ALL | ALL | 2002 - 2004 | From 9/2002 Thru 8/2004 Production Date | GH-4BBESF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | ALLROAD QUATTRO | 4.2 | ALL | ALL | 2004 - 2005 | From 10/2003 Thru 8/2004 Production Date | GH-4BBASF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | RS6 | 4.2 | ALL | ALL | 2003 - 2003 | From 2/2003 Thru 7/2004 Production Date | GH-4BBCYF Chassis | Stock Plug/Heat Range: ISO:7 | |
| AUDI | S4 | 2.7 | ALL | ALL | 2000 - 2002 | From 6/1999 Thru 8/2003 Production Date | GF-8DAGBF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | S6 | 2.2 | L5 | ALL | 1995 - 1995 | From 11/1994 Thru 7/2000 Production Date | E-4AAAN Chassis | Stock Plug/Heat Range: ISO:7 | |
| AUDI | S6 | 4.2 | ALL | ALL | 2002 - 2003 | From 11/2001 Production Date | GF/GH-4BANKF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | S6 | 4.2 | ALL | ALL | 2002 - 2003 | From 8/2000 Thru 10/2001 Production Date | GF-4BAQJF Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | S8 | 4.2 | ALL | ALL | 2001 - 2003 | From 1/2001 Production Date | GF-4DAYS Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | TT | 1.8 | ALL | ALL | 2001 - 2005 | From 9/2001 Thru 10/2005 Production Date | GF/GH-8NAUQ Chassis | Roadster | Stock Plug/Heat Range: ISO:6 |
| AUDI | TT | 1.8 | ALL | ALL | 2001 - 2005 | From 1/2001 Thru 10/2005 Production Date | GF/GH-8NAUQ Chassis | Coupe | Stock Plug/Heat Range: ISO:6 |
| AUDI | TT | 1.8 | ALL | ALL | 2005 - 2006 | From 11/2005 Thru 6/2006 Production Date | GH-8NBVR Chassis | Roadster | Stock Plug/Heat Range: ISO:6 |
| AUDI | TT | 1.8 | ALL | ALL | 2005 - 2006 | From 11/2005 Thru 6/2006 Production Date | GH-8NBVR Chassis | Coupe | Stock Plug/Heat Range: ISO:6 |
| AUDI | TT | 1.8 | ALL | ALL | 2005 - 2006 | From 6/2005 Production Date | QUATTRO SPORTS Chassis | Stock Plug/Heat Range: ISO:6 | |
| AUDI | TT QUATTRO | 1.8 | ALL | ALL | 2000 - 2000 | From 10/1999 Thru 12/2000 Production Date | GF-8NAPXF Chassis | Coupe | Stock Plug/Heat Range: ISO:6 |
| AUDI | TT QUATTRO | 1.8 | ALL | ALL | 2000 - 2000 | From 5/2000 Thru 12/2000 Production Date | GF-8NAPXF Chassis | Roadster | Stock Plug/Heat Range: ISO:6 |
| AUDI | TT QUATTRO | 1.8 | ALL | ALL | 2001 - 2003 | From 1/2001 Thru 8/2003 Production Date | GF/GH-8NBAMF Chassis | Coupe | Stock Plug/Heat Range: ISO:6 |
| AUDI | TT QUATTRO | 1.8 | ALL | ALL | 2001 - 2003 | From 1/2001 Thru 8/2003 Production Date | GF/GH-8NBAMF Chassis | Roadster | Stock Plug/Heat Range: ISO:6 |
| BMW | 318I | 1.8 | ALL | ALL | 1991 - 1995 | From 7/1991 Thru 6/1998 Production Date | E-CA18 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 318I | 1.9 | L4 | ALL | 1996 - 1998 | From 7/1998 Thru 10/2001 Production Date | GF/GH-AL19 Chassis | Touring | Stock Plug/Heat Range: ISO:6 |
| BMW | 318IS | 1.8 | ALL | ALL | 1993 - 1995 | From 5/1993 Thru 7/1996 Production Date | E-BE18 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 318IS | 1.9 | L4 | ALL | 1996 - 1997 | From 4/1996 Thru 12/1999 Production Date | E-BE19 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 318TI | 1.8 | ALL | ALL | 1995 - 1995 | From 2/1995 Thru 7/1996 Production Date | E-CG18 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 318TI | 1.9 | L4 | ALL | 1996 - 1999 | From 81/1996 Thru 10/2001 Production Date | E-CG19 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 323I | 2.5 | ALL | ALL | 1998 - 1998 | From 9/1998 Production Date | GF-AM25 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 325I | 2.5 | ALL | ALL | 1991 - 1991 | From 5/1991 Production Date | E-CB25 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 325I | 2.5 | ALL | ALL | 1993 - 1993 | From 10/1993 Production Date | E-BJ25 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 325I | 2.5 | ALL | ALL | 2001 - 2005 | From 11/2000 Thru 3/2005 Production Date | GH-AV25 Chassis | Touring | Stock Plug/Heat Range: ISO:6 |
| BMW | 328CI | 2.8 | L6 | ALL | 2000 - 2000 | From 6/1999 Production Date | GF-AM28 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 328I | 2.8 | L6 | ALL | 1996 - 1998 | From 8/1995 Thru 6/1998 Production Date | E-BK28 Chassis | Cabriolet | Stock Plug/Heat Range: ISO:6 |
| BMW | 328I | 2.8 | L6 | ALL | 1996 - 1998 | From 8/1995 Thru 6/1998 Production Date | E-CD28 Chassis | Coupe | Stock Plug/Heat Range: ISO:6 |
| BMW | 328I | 2.8 | L6 | ALL | 1998 - 1998 | From 7/1998 Production Date | GF-AM28 Chassis | Stock Plug/Heat Range: ISO:6 | |
| BMW | 328I | 2.8 | L6 | ALL | 2000 - 2000 | From 1/2000 Production Date |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.1 ★★★★★
Based on 1470 reviews
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Product Reviews
★★★★★ 5
Fresh, Clean Air — Excellent Quality Cabin Filter!
Size: 9.7" x 9.3" x 1.8"
This premium HEPA‑rated filter does an outstanding job of keeping dust, pollen, and tiny airborne particles out of the cabin — much better than standard cabin filters. It’s designed and tested to meet true HEPA filtration standards, effectively capturing up to 99.97 % of particles down to 0.3 microns in size, so the air inside the car feels noticeably cleaner and fresher.
Installation was straightforward and fit exactly in place in my vehicle with no modifications needed. The high‑quality filter media feels dense and well‑constructed, with built‑in structural support to help it hold its shape throughout its service life.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
★★★★★ 5
Must Buy HEPA Cabin Filter
Size: 9.7" x 9.3" x 1.8"
Great filter and excellent Value! And, it’s a Bosch !!! Description and sizing were exactly as advertised. DIY install was easy and it fit my 2019 Highlander perfectly ! Filter is HEPA and well made and is a good thickness, so much better than the flimsy one the car dealership installed. Impressive ! Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
★★★★★ 5
good performance
Size: 9.7" x 9.3" x 1.8"
The installation is simple, the size is just right, and most importantly, the price is very good. It is the best choice for consumables.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 5
A Lungful of Freedom
Size: 9.7" x 9.3" x 1.8"
Dateline: The Passenger-Side Footwell of a Toyota Venza, Sunday Night. We spend our lives in sealed metal boxes, hurtling through a thick, invisible soup of our own collective filth. A foul cocktail of exhaust fumes, road dust, tire particles, and whatever strange, pollen-based miasma the world decides to throw at us on any given day. To breathe that poison in, unfiltered, is an act of slow, unwitting suicide. You need a line of defense. A gatekeeper for your own lungs.
Enter the Bosch 6055C HEPA Cabin Air Filter. It is not a glamorous part. It is not a performance upgrade that adds horsepower or prestige. It is a simple, pleated rectangle of paper and charcoal, a humble guardian destined to live out its days in a dark plastic cave behind your glovebox. But its mission is a noble one.
The replacement process is a moment of pure, unadulterated, five-minute victory over the dealership's service department. You pop open the glovebox, you unclip the old filter tray, and you pull out the old soldier. And what you find is a horror show. A grey, matted testament to the unseen war it has been fighting on your behalf, choked with leaves, dirt, and the ghosts of a thousand diesel trucks. It is the face of the enemy.
You unwrap the new Bosch filter. It feels solid, well-made. The pleats are clean and numerous. I laid it side-by-side with the outgoing Denso filter—a brand that supplies the automakers themselves—and I could find no meaningful difference. The quality was equal. The construction, robust. This was no flimsy, cut-rate pretender. This was a serious piece of hardware from a serious company.
You slide the clean, white Bosch into the tray, snap it back into its dark little home, and close the glovebox. The deed is done. You have performed a life-saving transplant on your vehicle's respiratory system in less time than it takes to listen to a single pop song.
And the value… the value is the sweet, sweet punchline. For a fraction of what a dealership would charge you for the same simple service, you have installed a top-tier, HEPA-grade filter from one of the most respected names in the business. You have guaranteed yourself a clean, breathable bubble of personal space as you navigate the toxic jungle of the modern roadway.
This is not just a filter; it's a small, affordable act of rebellion. It’s a declaration that you, and you alone, are the master of the air you breathe. It is a simple, effective, and profoundly satisfying piece of gear. Highly recommended.
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Reviewed in the United States on June 9, 2025
★★★★★ 4
Great Upgrade to your Cabin Filter. Fits 2018 Subaru Outback
Size: 9.7" x 9.3" x 1.8"
This is a great filter upgrade to your cabin filter. This is better than the Subi standard part. Fits my Subaru outback. NOTE: Subi marks their filter with an 'up' arrow; however, this filter is marked with a 'airflow' direction. Direction of air flow is toward the blower motor so it will point downward when you install it.
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Reviewed in the United States on April 25, 2026