Skip to main content
Welcome to the NEW WCCC Cougar Parts Catalog
(Click here to tell us what you think)
Our warehouse is closed for New Years Jan 1-4th.
Orders placed after 12PM PST on Tuesday 12/30/2025 may not ship until Monday (1/5/2026).
International Customers Click Here [Updated 6/2025]

Smog / Thermactor Emissions Systems & Related Parts

Filter by
Products 97-106 of 106
Relief Valve - Smog Pump - Repro ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968,1968 cougar,1968 mustang,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,air,c8w,c8z,c9w,c9z,core,cougar,d0w,d0z,ford,ford mustang,mercury,mercury cougar,mustang,pump,thermactor,33002,valve,relief,repro,new,check,smog,thermactor
33002

Reproduction pressure relief valve for any 1968 - 1970 thermactor smog pump. 1968 289-2V, 302-2V, and 302-4V all with manual transmissions, and 1968 390-4V, 427-4V on all domestic US Cougars....

Price: $90.00
Smog Tube - Cylinder Head - 390-4V / 427 GT-E / 428CJ - Driver Side - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968 cougar,1968 mustang,1969 cougar,1969 mustang,1970 cougar,1970 mustang,390,427,1967,1968,1969,1970,428cj,c8w,c8z,c9w,c9z,cougar,cylinder,d0w,d0z,driver,ford,ford mustang,head,mercury,mercury cougar,mustang,side,smog,tube,used,427,head,heads,cylender,driver,drivers,drivers,24886,left
24886

Left side Thermactor smog tube with the jog and bracket around the coil. Bare tube, installation hardware is not included. Not always available, hard to keep on the shelf, look for our reproduction...

Price: $301.58
Smog Tube - Cylinder Head - 390-4V / 427 GT-E / 428CJ - Passenger Side - Used ~ 1968 - 1970 Mercury Cougar / 1968 - 1970 Ford Mustang 1968 cougar,1968 mustang,1969 cougar,1969 mustang,1970 cougar,1970 mustang,390,427,1967,1968,1969,1970,428cj,c8w,c8z,c9w,c9z,cougar,cylinder,d0w,d0z,ford,ford mustang,head,mercury,mercury cougar,mustang,passenger,side,smog,tube,used,427,head,heads,cylender,passenger,passengers,passengers,side,24885
24885

Right side Thermactor smog tube. Installation hardware is included as shown. Not always available, hard to keep on the shelf, we always have the reproduction tube set (right and left) in stock. Must...

Price: $340.21
Smog Tube - Cylinder Head - Lower - 289 / 302 - Used ~ 1968 Mercury Cougar / 1968 Ford Mustang 289,302,1968,1968 cougar,1968 mustang,c8w,c8z,cougar,cylinder,ford,ford mustang,head,lower,mercury,mercury cougar,mustang,smog,tube,used,cylender,23924
23924

Note that the nut and ferrule assembly is made of two pieces, with the ferrule being a compression fitting used to secure the smog tubes to a series of ports on the cylinder head. Sold individually,...

Price: $19.74
Smog Tube - Cylinder Head - Lower - Used ~ 1967 - 1970 Mercury Cougar / 1967 - 1970 Ford Mustang 1967,1967 cougar,1967 mustang,1968,1968 cougar,1968 mustang,1969,1969 cougar,1969 mustang,1970,1970 cougar,1970 mustang,c7w,c7z,c8w,c8z,c9w,c9z,cougar,cylinder,d0w,d0z,ford,ford mustang,head,lower,mercury,mercury cougar,mustang,smog,tube,used,cylender,23925
23925

This tube is embedded into the cylinder head making it rather difficult to remove intact. Note that the nut and ferrule assembly is made of two pieces, with the ferrule being a compression fitting...

Price: $8.06
Smog Tube - Cylinder Head - Small Block - Thermactor - Used ~ 1968 Mercury Cougar 1968,1968 cougar,block,c8w,cougar,cylinder,head,mercury,mercury cougar,small,smog,thermactor,tube,used,cylender,24379
24379

Specific to 1968 302-2V, and 302-4V all with manual transmissions - 3 speed or 4 speed. Same tube both sides, sold singly as a bare tube without installation hardware. Two total needed, one for use...

Price: $162.42
Spacer - Air Pump Mounting Bracket - 289 / 302 / BOSS 302 - Used ~ 1967 - 1969 Mercury Cougar / 1967 - 1969 Ford Mustang 1967,1967 cougar,1967 mustang,1968,1968 cougar,1968 mustang,1969 cougar,1969 mustang,289,302,1969,air,boss,bracket,c7w,c7z,c8w,c8z,c9w,c9z,cougar,ford,ford mustang,mercury,mercury cougar,mounting,mustang,pump,spacer,used,11038
11038

Application small block 289/302/B302 all years 1967 - 1969 with factory Thermactor smog. Spacer for mounting cast iron air pump mounting bracket. Sized .75" O.D. x .73" long. *Note - On Cougars with...

Price: $25.74
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