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1967 - 1970 Mercury Cougar / Ford Mustang Anti Backfire Valves - Thermactor

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Products 1-12 of 12
Valve - Anti Backfire - 289 - Used ~ 1967 Mercury Cougar / 1967 Ford Mustang 289,1967,1967 cougar,1967 mustang,anti,backfire,c7w,c7z,cougar,ford,ford mustang,mercury,mercury cougar,mustang,used,valve,23947,c6oe-c,
23947

Mounts on the rear of either the 289-2V or 289-4V factory cast iron intake manifold. This valve has three equal sized vacuum hose fittings in addition to the steel line going to an intake manifold...

Price: $110.95
Valve - Anti Backfire - 390 - Used ~ 1967 Mercury Cougar / 1967 Ford Mustang 390,1967,1967 cougar,1967 mustang,anti,backfire,c7w,c7z,cougar,ford,ford mustang,mercury,mercury cougar,mustang,used,valve,23905,c6ae-e
23905

Mounts on the rear of the intake manifold, it must be a 1967 or possibly a 1966 "S" intake manifold. There are no mounting provisions on 1968 or later factory cast iron intake manifolds. This valve...

Price: $188.16
Valve - Anti Backfire - Carter 4491S - 1-2-68 - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968,1968 cougar,1968 mustang,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,390gt,428cj,anti,backfire,c8w,c8z,c9w,c9z,carter,cougar,4491s,4491,d0w,d0z,ford,ford mustang,manufactured,mercury,mercury cougar,mustang,used,valve,canister,smog,24404
24404

Wide range of applications, which also include: 289-2V (C code engine), 302-2V (F code engine), 302-4V (J code engine) - Only 1968, and only with manual transmissions either 3 speed or 4 speed. 1968...

Price: $264.16
Valve - Anti Backfire - Carter 4491S - 10-12-67 - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968,1968 cougar,1968 mustang,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,390gt,428cj,anti,backfire,c8w,c8z,c9w,c9z,carter,cougar,4491s,4491,d0w,d0z,ford,ford mustang,manufactured,mercury,mercury cougar,mustang,used,valve,canister,smog,33459
33459

Wide range of applications, which also include: 289-2V (C code engine), 302-2V (F code engine), 302-4V (J code engine) - Only 1968, and only with manual transmissions either 3 speed or 4 speed. 1968...

Price: $264.15
Valve - Anti Backfire - Carter 4491S - 2-21-68 - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968,1968 cougar,1968 mustang,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,390gt,428cj,anti,backfire,c8w,c8z,c9w,c9z,carter,cougar,4491s,4491,d0w,d0z,ford,ford mustang,manufactured,mercury,mercury cougar,mustang,used,valve,canister,smog,33458
33458

Wide range of applications, which also include: 289-2V (C code engine), 302-2V (F code engine), 302-4V (J code engine) - Only 1968, and only with manual transmissions either 3 speed or 4 speed. 1968...

Price: $264.15
Valve - Anti Backfire - Carter 4491S - 3-19-68 - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968,1968 cougar,1968 mustang,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,390gt,428cj,anti,backfire,c8w,c8z,c9w,c9z,carter,cougar,4491s,4491,d0w,d0z,ford,ford mustang,manufactured,mercury,mercury cougar,mustang,used,valve,canister,smog,33455
33455

Wide range of applications, which also include: 289-2V (C code engine), 302-2V (F code engine), 302-4V (J code engine) - Only 1968, and only with manual transmissions either 3 speed or 4 speed. 1968...

Price: $264.15
Valve - Anti Backfire - Carter 4491S - 8-16-67 - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968,1968 cougar,1968 mustang,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,390gt,428cj,anti,backfire,c8w,c8z,c9w,c9z,carter,cougar,4491s,4491,d0w,d0z,ford,ford mustang,manufactured,mercury,mercury cougar,mustang,used,valve,canister,smog,33457
33457

Wide range of applications, which also include: 289-2V (C code engine), 302-2V (F code engine), 302-4V (J code engine) - Only 1968, and only with manual transmissions either 3 speed or 4 speed. 1968...

Price: $216.37
Valve - Anti Backfire - Carter 4491S - 9-5-67 - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968,1968 cougar,1968 mustang,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,390gt,428cj,anti,backfire,c8w,c8z,c9w,c9z,carter,cougar,4491s,4491,d0w,d0z,ford,ford mustang,manufactured,mercury,mercury cougar,mustang,used,valve,canister,smog,33454
33454

Wide range of applications, which also include: 289-2V (C code engine), 302-2V (F code engine), 302-4V (J code engine) - Only 1968, and only with manual transmissions either 3 speed or 4 speed. 1968...

Price: $264.16
Valve - Anti Backfire - Service Replacement - BOSS 302 - Used ~ 1969 - 1970 Mercury Cougar / 1969 - 1970 Ford Mustang canister,smog,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,302,anti,backfire,boss,c9w,c9z,cougar,d0w,d0z,ford,ford mustang,mercury,mercury cougar,mustang,replacement,service,used,valve,24464
24464

C8TE-B-SR Correct service replacement 4490-S Carter anti backfire valve, but without the outer cover having the concours correct stampings. These units are used, not tested and one should assume...

Price: $111.43
Valve - Anti Backfire - Carter - 289 / 302 / 390 GT / 427 GT-E / 428CJ - Service Replacement - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang canister,smog,1968 cougar,1968 mustang,1969 cougar,1969 mustang,289,302,390,1968,1969,1970,1970 cougar,1970 mustang,390gt,428cj,anti,backfire,c8w,c8z,c9w,c9z,carter,cougar,d0w,d0z,ford,ford mustang,mercury,mercury cougar,mustang,replacement,service,used,valve,24409
24409

C8OE-C-SR WCCC Carter service replacement anti backfire valve, but without the outer cover having the concours correct stampings.These units are used, not tested and one should assume they are...

Price: $81.74
Valve - Anti Backfire - Carter 4490S - BOSS 302 Eliminator - Used ~ 1969 - 1970 Mercury Cougar / 1969 - 1970 Ford Mustang canister,smog,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,302,anti,backfire,boss,c9w,c9z,cougar,d0w,d0z,eliminator,ford,ford mustang,mercury,mercury cougar,mustang,used,valvecarter,4490s,,24461
24461

Carter manufactured valve with C8TE-9B289-B and 4490-S imprinted on the valves' cover. Another hard to find part with correct date codes specific to Boss 302. Ford part number C8TZ-9B289-A....

Price: $201.01
Valve - Anti Backfire - Carter 4491S - 4-23-68 - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968,1968 cougar,1968 mustang,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,390gt,428cj,anti,backfire,c8w,c8z,c9w,c9z,carter,cougar,4491s,4491,d0w,d0z,ford,ford mustang,manufactured,mercury,mercury cougar,mustang,used,valve,canister,smog,33456
33456

Wide range of applications, which also include: 289-2V (C code engine), 302-2V (F code engine), 302-4V (J code engine) - Only 1968, and only with manual transmissions either 3 speed or 4 speed. 1968...

Price: $264.15
Mercury Cougars had Thermactor smog systems from their inception in 1967, but only those cars destined for California, District Sales Office (DSO) numbers 52 and 53 on your door data plate. The Thermactor emissions system injects air into the exhaust manifolds, which when mixed with the hot exhaust gases further promotes the burning of the hydrocarbons and carbon monoxide. Also called 'Backfire Suppressor Valve'. Starting in 1968 the Thermactor smog system was used on nearly all gasoline engines equipped with manual transmissions across all of the Ford car lines in all 50 states. *Note excludes Canada, which received the Ford IMCO systems. Additionally the Thermactor system was used on high performance engines with factory installed Holley carburetors, regardless of transmissions. Which include 390GT engines, 428 Cobra Jets engines, 427-4V GT-E?s, and Boss 302 Eliminators. In most cases the thermactor smog parts that West Coast Classic Cougars sells will be used and we cannot guarantee that after 40 years certain parts such as the anti-backfire valves and canisters, check valves or air pumps will still function like new. We are not even sure that some of these parts lasted until the oil embargo in 1974. We estimate that the majority of those show cars seen with vintage factory smog systems are ?just for show?, but they sure do greatly increase the value of our cars when sold at auction.