Pay in installments of $37.49 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
1970-1972 Ford Crown Performance Muffler Flowmaster Stainless SteelOverview: This two chamber design incorporates Flowmaster's Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Features: No internal packing to blowout Durable fully welded 16 gauge aluminized steel Race proven Delta
Overview:
This two chamber design incorporates Flowmaster's Delta Flow® technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
Features:
Specs:
Applications:
- 1970-1972 Buick GS 350 CID
- 1968-1969 Buick GS 350 350 CID
- 1968-1969 Buick GS 400 400 CID
- 1970-1972 Buick GS 455 455 CID
- 1967-1967 Buick Gran Sport 400 CID
- 1964-1964 Buick Skylark 300 CID
- 1965-1966 Buick Skylark 401 CID
- 1967-1967 Buick Skylark 340 CID
- 1968-1972 Buick Skylark 350 CID
- 1968-1968 Chevrolet Chevy II 327 CID
- 1967-1981 Chevrolet Camaro 350 CID
- 1984-1988 Chevrolet Monte Carlo 305 CID
- 1969-1973 Chevrolet Nova 307 CID
- 1970-1970 Chevrolet Nova 396 CID
- 1974-1974 Chevrolet Nova 350 CID
- 1965-1969 Oldsmobile 442 400 CID
- 1968-1971 Oldsmobile 442 455 CID
- 1964-1967 Oldsmobile Cutlass 330 CID
- 1965-1968 Oldsmobile Cutlass 400 CID
- 1967-1971 Oldsmobile Cutlass 250 CID
- 1968-1972 Oldsmobile Cutlass 350 CID
- 1970-1972 Oldsmobile Cutlass 455 CID
- 1964-1966 Pontiac GTO 389 CID
- 1967-1972 Pontiac GTO 400 CID
- 1970-1972 Pontiac GTO 455 CID
- 1967-1979 Pontiac Firebird 400 CID
- 1967-1967 Pontiac Firebird 326 CID
- 1967-1967 Pontiac Firebird 230 CID
- 1968-1979 Pontiac Firebird 350 CID
- 1968-1976 Pontiac Firebird 250 CID
- 1971-1976 Pontiac Firebird 455 CID
- 1977-1981 Pontiac Firebird 231 CID
- 1977-1981 Pontiac Firebird 305 CID
- 1977-1979 Pontiac Firebird 403 CID
- 1977-1981 Pontiac Firebird 301 CID
- 1980-1981 Pontiac Firebird 265 CID
- 1981-1981 Pontiac Firebird 267 CID
- 1964-1967 Pontiac LeMans 326 CID
- 1964-1965 Pontiac LeMans 215 CID
- 1967-1967 Pontiac LeMans 230 CID
- 1968-1972 Pontiac LeMans 250 CID
- 1968-1972 Pontiac LeMans 350 CID
- 1968-1972 Pontiac LeMans 400 CID
- 1970-1972 Pontiac LeMans 455 CID
- 1992-1997 Ford Crown Victoria 281 CID
- 1994-2004 Ford Mustang 232 CID
- 2004-2004 Ford Mustang 238 CID
- 2007-2010 Ford Ranger 245 CID
- 2007-2010 Ford Ranger 140 CID
- 1992-1995 Ford Taurus 232 CID
- 1993-1995 Ford Taurus 195 CID
- 1996-1999 Ford Taurus 207 CID
- 1983-1986 Ford Thunderbird 140 CID
- 1983-1986 Ford Thunderbird 232 CID
- 1983-1986 Ford Thunderbird 302 CID
- 1988-1991 Honda CRX 98 CID
Emissions:
- This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
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
4.9 ★★★★★
Based on 25 reviews
Sort
Product Reviews
★★★★★ 5
Great product
Model: 36 SqFt(3.4 SqM)
I used this on the doors of a Toyota Tacoma, worked as it described. Reduced the road noise significantly.. Need to buy another box for the floor and roof of the truck..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
★★★★★ 5
Great product - Add foam product for complete solution
Model: 36 SqFt(3.4 SqM)
Used in two cars with speaker upgrades. Easy to install but get the roller for assured adhesion.removes "tinnyness" from large metal resonators. Use with foam absorptive material for a complete system.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 5
Great Product for noise reduction in Auto Use.
Model: 36 SqFt(3.4 SqM)
I use this on many builds to dampen the metal echo in cars, vans, and trucks. Just one sheet in the center of a body panel is a huge difference maker. You can also cover the entire surface and get added insulation value. The noise is greatly depleted and it's easy to install with a roller tool. Looks Great when done. Good Product I will use again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025
★★★★★ 5
74 monte carlo Resto
Model: NewSLS50_52
Great product easy installation with sheets cut to size,using for Classic car Restoration,floor pan and doors
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
Impressive Sound Deadening Solution with Enhanced Audio Quality
Model: NewSLS50_52
I recently purchased the Siless 50 mil (1.3mm) 52 sqft Car Sound Deadening mat, and I am delighted with the results it has delivered. Right from the start, I was impressed with the packaging, which ensured the product arrived in perfect condition.
One of the standout features of this sound deadening mat is its ease of use. It was a breeze to cut and modify according to my specific needs. Whether I needed to cover specific areas or customize the size, the mat accommodated my requirements effortlessly. This flexibility made the installation process a breeze.
The Siless Sound Deadening mat has proven to be highly effective in reducing outside noise within my vehicle. With just a half cabin install, I noticed a significant reduction of approximately 10 decibels, making my driving experience much quieter and more comfortable. The mat acted as a reliable barrier against external noise, allowing me to enjoy a more peaceful ride.
Furthermore, the sound quality from my vehicle's audio system experienced a noticeable improvement. The Siless mat effectively dampened vibrations and minimized resonance, resulting in cleaner and more refined audio output. The mat's thickness of 50 mil (1.3mm) ensures optimal sound absorption, contributing to its effectiveness in creating a quieter and more enjoyable driving environment. I can now appreciate the full range of tones and enjoy a more immersive music experience during my drives.
Overall, I highly recommend the Siless 50 mil Car Sound Deadening mat for anyone seeking a reliable and effective solution to reduce noise and enhance audio quality in their vehicle. The easy cutting and modifying process, along with the excellent packaging, contribute to a seamless installation experience. With a significant reduction in outside noise and an improvement in sound system performance, this sound deadening mat has exceeded my expectations.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2023