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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
4.4 ★★★★★
Based on 1977 reviews
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Product Reviews
★★★★★ 5
Works if you need help. Not a miracle in a bottle.
Size: 1 Count (Pack of 1)
It has worked every time I've used this product. Won't fix a damage catalytic converter but will help you pass the test if your car almost passed.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Worked like a charm.
Size: 1 Count (Pack of 1)
Used it as directed. Down to an eighth of a tank. Poured it in and added enough gas to get back to one half a tank. Wanted to get it mixed in really well. Immediately jumped on the interstate and ran 75 MPH for 40 miles. Stopped and filled the tank and when I restarted the engine, the light was off. Coincidence? Not a chance. Light had been on continuously for weeks. AutoZone said I needed a catalytic converter. Nope. One thing I found out the hard way. If your gas filler has a flap at the top, make sure it is easy to push aside. Mine had a little release button near the top that the filler hose would depress before the flap would release. Dumped the first bottle right on the ground. Twelve bucks wasted. No one to blame but me, I guess. Still a bargain, even at twice the price.
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Reviewed in the United States on February 17, 2026
★★★★★ 1
Before use on March 15 two days later March 17 engine light still on
Size: 1 Count (Pack of 1), Size: 1 Count (Pack of 1)
I read the specs on this product and it was guaranteed to cleanse as well as turn engine light off in vehicle. I received it March 14.2026 and used it on March 15.2026 I took a picture on Sunday before I entered it into the gas tank engine light was on at that time. Today is March 17.2026 and engine light is still on. The truck was driven for one hour on the 15th 45 minutes on the 16th and 50 minutes on 17 March. Still the engine light is on. Got home parked the vehicle took a picture again to show engine light is still on product guaranteed it was shut it off, but unfortunately product does not work.
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Reviewed in the United States on March 17, 2026
★★★★★ 4
Good stuff
Size: 1 Count (Pack of 1)
I've used and it's worked for emissions for me and that's with having check engine light on..use stuff,drive around a bit,clear code drive to emissions and should b good unless got serious problems. It's good to use 1 or 2 times a yr if high mileage vehicle.
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Reviewed in the United States on January 1, 2025
★★★★★ 5
It works!
Size: 1 Count (Pack of 1)
My 2005 Jetta failed the inspection and my mechanic said (after clearing the engine light) that I should drive the car for 20 min highway and 20 local. We've tried that the whole day but out of three lights on his device only 1 went away. Next day the light engine came back. After not being happy with the explanation offered by him (a family friend) that I should keep driving it until we get lucky I went online and found CRC 05063. Followed the instruction (one bottle on full tank of gas). Before my tank was under 3/4, engine light went off!! At half tank I went and did the inspection - IT PASSED! I am really impressed!
Update August 2015!
I have been using this product for 2-3 years now and if it is not working for you please read. In July I have used the first bottle and took my 2005 Jetta for inspection. It failed. Ordered a second bottle and it failed again. My mechanic said keep driving. Did 200 miles in one day and nothing. Decided to take matters in my own hands and ordered Autel MaxiScan MS300 ($18, it allows you to read and delete codes). There were two faults - EVAP and 2nd something about Oxygen. Went online and this is the first time I heard about driving cycles. These are steps that you have to follow so that your car's computer can start measuring all the parameters needed for the test. Driving cycles are not exact science but I tried to follow the instructions as much as I could and after just 20 minutes (10min city and 10min highway) ALL the parameters were set and I passed the emission test with flying colors! So, just before you give a comment about CRC like "tried and didn't work" be aware that there are other things you have to take into account.
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Reviewed in the United States on July 1, 2013