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For Your Every Summer RSVP, with Code: SUMMER15
Description
Fits 1982-2002 Chevrolet Camaro; Engine Mount Thru Bolt Hardware Kit 71223015HKRFactory replacement M12x1. 75x150mm flange head bolt kit; Stock replacement bolts are hard to find due to their uncommon length. This kit can be used for either GM LS LT & Mopar Gen III Hemi poly mounts Features: Can be used for aftermarket poly mounts or OEM rubber (Rubber Mounts are for GM 4th Gen F Body) Class 10. 9 for strength Zinc plated for corrosion resistance Includes 2 flange head bolts and 2 flange nuts Specs: Application GM LS LT Engines
Factory replacement M12x1.75x150mm flange head bolt kit; Stock replacement bolts are hard to find due to their uncommon length. This kit can be used for either GM LS/LT & Mopar Gen III Hemi poly mounts
Features:
- Can be used for aftermarket poly mounts or OEM rubber (Rubber Mounts are for GM 4th Gen F-Body)
- Class 10.9 for strength
- Zinc plated for corrosion resistance
- Includes 2 flange head bolts and 2 flange nuts
Specs:
| Application | GM LS/LT Engines |
|---|---|
| Brand | Hooker BlackHeart |
| Choose Your Part | Engine Mount Bolts |
| Color | Silver |
| Emission Code | 6 |
| Finish | Zinc |
| Material | Steel |
| Motor Type | GM LS |
| Motor Type | GM LT |
| Product Type | Engine Mounts |
| Type of Component | Engine Mounts |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1982-2002 | Chevrolet | Camaro | Z28 |
| 1998-2002 | Chevrolet | Camaro | Z28 SS |
| 1989-2002 | Pontiac | Firebird | Formula |
| 1982-2002 | Pontiac | Firebird | Trans Am |
| 2006 | Jeep | Wrangler | 65th Anniversary Edition |
| 2003-2006 | Jeep | Wrangler | Rubicon |
| 1994-2006 | Jeep | Wrangler | SE |
| 1987-2006 | Jeep | Wrangler | Sport |
| 2004-2006 | Jeep | Wrangler | Unlimited |
| 2005-2006 | Jeep | Wrangler | Unlimited Rubicon |
| 2002-2006 | Jeep | Wrangler | X |
| 2006 | Jeep | Wrangler | X 65 Aniversario |
| 1988-2004 | Jeep | Wrangler | Sahara |
| 2003 | Jeep | Wrangler | X AT |
| 2001 | Jeep | Wrangler | 60 Aniversario |
| 1987-1997 | Jeep | Wrangler | Base |
| 1994-2004 | Chevrolet | S10 | LS |
| 2002-2004 | Chevrolet | S10 | ZR5 |
| 1994-2004 | GMC | Sonoma | SL |
| 1993-2004 | GMC | Sonoma | SLS |
| 1982-2003 | Chevrolet | S10 | Base |
| 1999-2003 | Chevrolet | S10 | Xtreme |
| 1994-2003 | Chevrolet | S10 | ZR2 |
| 1988-2002 | Chevrolet | Camaro | Base |
| 1982-2002 | Pontiac | Firebird | Base |
| 1991-2001 | GMC | Sonoma | SLE |
| 1989-1998 | Chevrolet | C1500 | Base |
| 1988-1998 | Chevrolet | C1500 | Cheyenne |
| 1988-1998 | Chevrolet | C1500 | Silverado |
| 1990-1998 | Chevrolet | C1500 | WT |
| 1996-1998 | Chevrolet | Camaro | Lujo |
| 1988-1998 | Chevrolet | K1500 | Cheyenne |
| 1988-1998 | Chevrolet | K1500 | Silverado |
| 1990-1998 | Chevrolet | K1500 | WT |
| 1994-1998 | Chevrolet | S10 | SS |
| 1994-1998 | GMC | C1500 | Sierra SL |
| 1988-1998 | GMC | C1500 | Sierra SLE |
| 1994-1998 | GMC | C1500 | Sierra SLT |
| 1994-1998 | GMC | C1500 | Sierra Special |
| 1994-1998 | GMC | K1500 | Sierra SL |
| 1988-1998 | GMC | K1500 | Sierra SLE |
| 1994-1998 | GMC | K1500 | Sierra SLT |
| 1994-1998 | GMC | K1500 | Sierra Special |
| 1989-1997 | Chevrolet | Camaro | RS |
| 1994-1997 | Chevrolet | K1500 | Base |
| 1997 | GMC | C1500 | Sierra GT |
| 1979-1995 | Ford | Mustang | Base |
| 1982-1995 | Ford | Mustang | GT |
| 1995 | Ford | Mustang | GTS |
| 1993-1995 | Ford | Mustang | SVT Cobra |
| 1993-1995 | Ford | Mustang | SVT Cobra R |
| 1995 | GMC | K1500 | Sierra SLS |
| 1995 | Jeep | Wrangler | Rio Grande |
| 1991-1994 | Jeep | Wrangler | Renegade |
| 1988-1994 | Jeep | Wrangler | S |
| 1994 | Pontiac | Firebird | Trans Am GT |
| 1990-1993 | Chevrolet | C1500 | 454 SS |
| 1993 | Chevrolet | Camaro | Indianapolis 500 Pace Car |
| 1992-1993 | Chevrolet | S10 | EL |
| 1991-1993 | Chevrolet | S10 | Maxi |
| 1984-1993 | Ford | Mustang | LX |
| 1988-1993 | GMC | C1500 | Sierra |
| 1988-1993 | GMC | C1500 | Sierra SLX |
| 1988-1993 | GMC | K1500 | Sierra |
| 1988-1993 | GMC | K1500 | Sierra SLX |
| 1993 | GMC | K1500 | Sierra Sport |
| 1991-1993 | GMC | Sonoma | Base |
| 1988-1992 | Chevrolet | C1500 | Scottsdale |
| 1992 | Chevrolet | Camaro | RS Heritage Edition |
| 1992 | Chevrolet | Camaro | Z28 Heritage Edition |
| 1988-1992 | Chevrolet | K1500 | Scottsdale |
| 1982-1992 | Chevrolet | S10 | Tahoe |
| 1992 | GMC | Sonoma | GT |
| 1988-1992 | Jeep | Wrangler | Islander |
| 1989-1992 | Pontiac | Firebird | Trans Am GTA |
| 1991 | Chevrolet | K1500 | Sport |
| 1991 | Chevrolet | S10 | Baja |
| 1985-1990 | Chevrolet | Camaro | Iroc-Z |
| 1982-1990 | Chevrolet | S10 | Durango |
| 1982-1990 | GMC | S15 | Base |
| 1982-1990 | GMC | S15 | High Sierra |
| 1982-1990 | GMC | S15 | Sierra Classic |
| 1987-1990 | Jeep | Wrangler | Laredo |
| 1982-1989 | Chevrolet | S10 | Sport |
| 1989 | Pontiac | Firebird | Trans Am GTA SE |
| 1983-1988 | GMC | S15 | Gypsy |
| 1987 | Chevrolet | Camaro | LT |
| 1982-1987 | Chevrolet | Camaro | Sport |
| 1987 | GMC | S15 | EL |
| 1982-1986 | Chevrolet | Camaro | Berlinetta |
| 1984-1986 | Ford | Mustang | SVO |
| 1982-1986 | Pontiac | Firebird | S/E |
| 1984 | Ford | Mustang | GT-350 20th Anniversary |
| 1982-1984 | Ford | Mustang | L |
| 1982-1983 | Ford | Mustang | GL |
| 1982-1983 | Ford | Mustang | GLX |
| 1983 | Ford | Mustang | Turbo GT |
| 1982 | Chevrolet | Camaro | Z28 Indianapolis 500 Pace Car |
| 1979-1982 | Ford | Mustang | Ghia |
| 1982 | GMC | S15 | Sierra Grande |
| 1981 | Ford | Mustang | Cobra |
| 1970-1972 | Buick | GS | Base |
| 1970-1972 | Buick | GS 455 | Base |
| 1970-1972 | Buick | Skylark | 350 |
| 1964-1972 | Buick | Skylark | Base |
| 1968-1972 | Buick | Skylark | Custom |
| 1963-1972 | Chevrolet | C10 Pickup | Base |
| 1964-1972 | Chevrolet | Chevelle | Base |
| 1967-1972 | Chevrolet | Chevelle | Concours |
| 1969-1972 | Chevrolet | Chevelle | Concours Estate |
| 1969-1972 | Chevrolet | Chevelle | Greenbrier |
| 1968-1972 | Chevrolet | Chevelle | Malibu |
| 1968-1972 | Chevrolet | Chevelle | Nomad |
| 1964-1972 | Chevrolet | Chevelle | SS |
| 1964-1972 | Chevrolet | El Camino | Base |
| 1968-1972 | Chevrolet | El Camino | Custom |
| 1968-1972 | Chevrolet | El Camino | SS |
| 1967-1972 | GMC | C15/C1500 Pickup | Base |
| 1971-1972 | GMC | Sprint | Base |
| 1972 | GMC | Sprint | Custom |
| 1964-1972 | Oldsmobile | Cutlass | Base |
| 1972 | Oldsmobile | Cutlass | Cruiser |
| 1968-1972 | Oldsmobile | Cutlass | S |
| 1968-1972 | Oldsmobile | Cutlass Supreme | Base |
| 1964-1972 | Oldsmobile | Vista Cruiser | Base |
| 1964-1972 | Pontiac | GTO | Base |
| 1964-1972 | Pontiac | LeMans | Base |
| 1972 | Pontiac | LeMans | Luxury |
| 1970-1972 | Pontiac | LeMans | Sport |
| 1964-1971 | Oldsmobile | 442 | Base |
| 1970-1971 | Pontiac | GTO | The Judge |
| 1971 | Pontiac | LeMans | T37 |
| 1970 | Buick | GS 455 | GSX |
| 1964-1970 | Oldsmobile | F85 | Base |
| 1969-1970 | Pontiac | LeMans | Safari |
| 1968-1969 | Buick | GS 350 | Base |
| 1969 | Buick | GS 400 | Base |
| 1964-1969 | Buick | Special | Base |
| 1967-1969 | Chevrolet | Chevelle | 300 Deluxe |
| 1964-1969 | Pontiac | Tempest | Base |
| 1964-1969 | Pontiac | Tempest | Custom |
| 1964-1969 | Pontiac | Tempest | Safari |
| 1967-1968 | Chevrolet | Chevelle | 300 |
| 1965-1967 | Buick | Gran Sport | Base |
| 1964-1967 | Buick | Special | Deluxe |
| 1964-1967 | Buick | Sportwagon | Base |
| 1965-1967 | Chevrolet | Chevelle | Deluxe |
| 1964-1967 | Chevrolet | Malibu | Base |
| 1964-1967 | Oldsmobile | Cutlass | Holiday |
| 1967 | Oldsmobile | Cutlass | Turnpike Cruiser |
| 1964-1967 | Oldsmobile | Vista Cruiser | Custom |
| 1964-1967 | Pontiac | Beaumont | Base |
| 1966 | Buick | Sportwagon | Custom |
| 1964-1966 | Oldsmobile | F85 | Deluxe |
| 1966 | Oldsmobile | F85 | Holiday |
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
4.2 ★★★★★
Based on 644 reviews
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Product Reviews
★★★★★ 4
Awesome, inexpensive alternative to name-brands!
Size: 36 sqft
Awesome. Stuck well with alcohol prep and time to let liquid flash-off. Very consistent, piece to piece. Backing peeled easily when desired. Compared to Amazon Basics, the butyl seemed a little thicker (infinitesimally) and stickier, foil was less thick than Amazon Basics. Very good value. Started with my nice car, but after completing project, sound dampened all cars in the immediate family it made such a noticeable difference in sound level and quality of music from soeakers. Recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025
★★★★★ 5
Easy to use
Size: 36 sqft, Size: 36 sqft
Very good and easy to use, made my 88 Chevy feel better
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
★★★★★ 5
Great sound deadening material with easy installation.
Size: 36 sqft, Size: 36 sqft
This sound-deadening mat was easy to install on the roof of my Toyota FJ Cruiser. It significantly stiffened the roof and dramatically reduced the wind noise inside the vehicle caused by my roof rack and lights. I can actually carry on a conversation again without shouting while driving on the freeway.
The 36-square-foot package was enough for my application, with about three sheets left over. The tiles adhered well to the metal without any special surface preparation. I only wish I had done this sooner.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Siless Hybrid 3-in-1 - Far Exceeded my Expectations!!!
Model: SLH20025
I recently installed the Siless Hybrid 3-in-1 sound deadening mat in my vehicle, and I’m genuinely impressed. For just $80 for 25 square feet, this product delivers performance that rivals materials costing twice as much — and with far less hassle. If you're on the fence......Just buy it! You will not be disappointed.
Easy to Install: Unlike traditional sound deadening products that are stiff, sharp, and temperature-sensitive, this mat is soft, flexible, and easy to work with. I cut it cleanly with regular scissors and pressed it into tight spaces using just my fingers, so if in you don't have a roller or install tool, a good pair of scissors and your hands can get the job done. With other brands like Dynamat, the aluminum layer often leaves micro cuts on your hands and tears up your fingertips, but Siless does not due the acoustic layer being on top and above the aluminum layer that holds the butyl layer. So, it's very easy on your hands.
Even in cooler temperatures (around 50°F), I had no trouble applying it but it goes on better heated. If warm outside, I would leave the entire box out in the sun for at least 30 minutes when it's warm or heats it's very pliable and easy to mold. Make sure its where you want it because once applied it's not ever falling off. and it became even more pliable and easy to mold. No heat gun, no mess — just straightforward application.
I installed 40–50 square feet throughout the interior, covering everything except the headliner and the flooring forward of the rear seat. The difference in cabin noise is astonishing. I can turn my radio up concert loud with gut-punching bass, and from outside the car, it sounds like a factory sound system at mid volume. I was blown away by how well it contains sound — both inside out and outside in.
My exhaust is pretty aggressive and now is barely audible from inside the cabin. While driving, it almost sounds like a stock factory setup. The Siless matting actually changed the driving experience and feels refined.
If you're skeptical about sound deadening gimmicks, I get it, but this is the first product I've used and when I needed more, I went Stright to the 3 in 1 Hybrid matting and purchased it again. I love researching before buying and that's very uncommon for me to do.
Note: Proper installation is key, and it does take time and patience. But if installed correctly and in the right places, it works better previously used from paint-on sound deadening to Dynamat.
Update Nov, 2025
After using it this in 4 separate vehicles now. I feel the Siless’s 3 in 1 Hybrid has nailed it for best budget deadener that is better than dynamat extreme in performance and installation
Protip: buy a roll of 2-3” aluminum tape and tape the seams. After trimming the edges tend to very sticky between the panels. I ran a strip of aluminum tape over the seems to create a better seal and true moisture
I used it on four vehicles now and have I have not been paid to review and purchased every order myself.
3 in 1 Hybrid deadener by Siless is the best all around easy to apply sound deadner period!
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Reviewed in the United States on September 29, 2025
★★★★★ 5
Top quality
Model: SLH20025
This Siless Hybrid 3-in-1 sound deadening mat is easy to work with and feels high-quality. The butyl material is thick and pliable, making it simple to cut and fit into doors, floors, or panels.
After installation, road noise and vibrations are noticeably reduced, and it also seems to improve the overall cabin feel. No bad smell.
At 25 sq ft per roll, it’s a good value for anyone looking to dampen noise and improve car acoustics. Overall, a solid, effective option for automotive soundproofing. Used on a Fiesta ST.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
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