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Online Store :: Air Cleaner / Smog

This section contains air cleaners, heat risers, S tubes, thermactor smog tubes, snorkels, thermactor smog pumps and valves and everything else related to vintage emissions for the 67 - 73 Mercury Cougar.


Our research efforts incorporate combinations of first hand knowledge, factory assembly manuals, physical examples on the premises and the Mercury Master Parts catalog. The Master Parts Catalog (or MPC) is the 3 foot thick book found at any Mercury dealer back in the day. Many of the parts have superseded numbers or are service replacement parts.
Many service replacement parts differ from the OEM factory installed parts. We do our best to know and understand these differences as they come up and point them out.
Catalog part numbers and physical part casting numbers also often differ and make part searches difficult. When applicable or when both parts are known to us we will try and list both in the text sections of our parts descriptions.
West Coast Classic Cougar recognizes the vast knowledge base of our fellow Cougar owners and enthusiasts. Many of you are original owners or have concours show winning Cougars. If we have made listing errors or made erroneous statements in our descriptions, please do bring it to our attention. Accuracy is our goal throughout our catalog.
Please click onto the individual items to obtain price and other details. You can click the image up to three times for a larger view. Need help? Call 503-463-1130

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1967 - 1973  Mercury CougarAir Cleaner Bases & Lids1967 - 1973 Mercury CougarAir Cleaner Bases & Lids
(Click Here for More Information or to Order)
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1967 -1973 Mercury Cougar Air Cleaner Snorkels1967 -1973 Mercury Cougar Air Cleaner Snorkels
(Click Here for More Information or to Order)
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Mercury Cougar Exhaust Manifold Heat Shields & S Tubes
(Click Here for More Information or to Order)
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The Master Parts Catalog has this part listed as “Shroud and Tube Assembly – Carburetor Air Cleaner Air Duct”. The street name is heat shield or exhaust manifold heat shield. Basically works in conjunction with your...
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1967 - 1968 Mercury Cougar 390 GT PCV Tube - Repro1967 - 1968 Mercury Cougar 390 GT PCV Tube - Repro
(Click Here for More Information or to Order)
Price:$79.00
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PCV TUBE, fits stock GT cast iron manifolds, replaces Ford part number C6AZ-6758-AR. Notice the main difference between the 390 tube and the 428 tube is the center fitting angle. The 390 tube is pictured sitting atop the 428 tube with the less pronounced angle.
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1967 - 1968 Mercury Cougar 390 GT PCV Tube - Used
(Click Here for More Information or to Order)
Price:$70.00
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Our Used PCV tubes will almost always have minor dings and scrapes.
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1968 - 1969 Mercury Cougar 427 - 428 CJ / SCJ PCV Tube - Repro1968 - 1969 Mercury Cougar 427 - 428 CJ / SCJ PCV Tube - Repro
(Click Here for More Information or to Order)
Price:$79.00
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PCV TUBE, use with # C8OE-C stock iron intake manifold, or aluminum GTE Police Interceptor intake. Replaces Ford Part Number C8OZ-6758-B. Notice the main difference between the 390 tube and the 428 tube is the center fitting angle. The 390 tube is pictured sitting atop the 428 tube with the less pronounced angle.
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1967 - 1968 Mercury Cougar 390 GT - 428 CJ / SCJ PCV Intake Manifold Fitting - Repro1967 - 1968 Mercury Cougar 390 GT - 428 CJ / SCJ PCV Intake Manifold Fitting - Repro
(Click Here for More Information or to Order)
Price:$52.00
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This fitting screws into intake manifold, has 1/2" nipple for PCV hose, 3/16" vacuum port nipple and threaded hole for smaller accessory fitting. Painted Ford Corporate blue from the factory.
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1967 - 1968 Mercury Cougar 390 GT - 428 CJ / SCJ PCV Intake Manifold Fitting - Used
(Click Here for More Information or to Order)
Price:$45.00
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1967 - 1969 Mercury Cougar PCV Front Intake Fitting - Repro1967 - 1969 Mercury Cougar PCV Front Intake Fitting - Repro
(Click Here for More Information or to Order)
Price:$52.00
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Replaces C7AZ-9A474-A. Painted Ford Corporate Blue from the factory.
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1967 - 1969 Mercury Cougar PCV Front Intake Fitting - Used
(Click Here for More Information or to Order)
Price:$55.00
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1969 Mercury Cougar 428 CJ / SCJ PCV Intake Manifold Fitting - Repro1969 Mercury Cougar 428 CJ / SCJ PCV Intake Manifold Fitting - Repro
(Click Here for More Information or to Order)
Price:$52.00
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This fitting screws into intake manifold, has 1/2" nipple for PCV hose, 3/16" vacuum port nipple and threaded hole for smaller accessory fitting. Painted Ford Corporate blue from the factory.
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1969 Mercury Cougar 428 CJ / SCJ PCV Intake Manifold Fitting - Repro
(Click Here for More Information or to Order)
Price:$70.00
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This fitting screws into intake manifold, has 1/2" nipple for PCV hose, 3/16" vacuum port nipple and threaded hole for smaller accessory fitting. Painted Ford Corporate blue from the factory.
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1967 - 1970 Mercury Cougar PCV Valve To Hose Adapter - Repro1967 - 1970 Mercury Cougar PCV Valve To Hose Adapter - Repro
(Click Here for More Information or to Order)
Price:$30.00
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This adapter is threaded on bottom for PCV valve and 6 degree nipple on side. Gold Cadmium plated, not painted originally. Replaces Ford Part Number C7OZ-6A706-A
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1967 - 1970 Mercury Cougar PCV Valve To Hose Adapter - Used
(Click Here for More Information or to Order)
Price:$35.00
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This adapter is threaded on bottom for PCV valve and 6 degree nipple on side. Was gold Cadmium plated, not painted.
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Anti Backfire Valves - Thermactor
(Click Here for More Information or to Order)
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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...
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Air Injection Smog Tubes to Cylinder Heads
(Click Here for More Information or to Order)
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We offer select, used smog components when they become available, and we are working hard to research all of the needed parts to complete an OEM looking smog system with used and reproduction parts. The air supply hoses would have part numbers on some of the molded hoses. Others we are not sure. The MPC does not list...
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1967 289 Thermactor Smog Components - California Smog DSO 52 and DSO 531967 289 Thermactor Smog Components - California Smog DSO 52 and DSO 53
(Click Here for More Information or to Order)
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We strongly suggest that you reference either your shop manuals or the Engine Assembly Manual. Especially for 1967, very hard to describe and visualize if you don’t have the exploded diagrams.
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1967  390 Thermactor Smog Components1967 390 Thermactor Smog Components
(Click Here for More Information or to Order)
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We strongly suggest that you reference either your shop manuals or the Engine Assembly Manual. Especially for 1967, very hard to describe and visualize if you don’t have the exploded diagrams.
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1968 Mercury Cougar 289 / 302 Thermactor Smog Components1968 Mercury Cougar 289 / 302 Thermactor Smog Components
(Click Here for More Information or to Order)
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In 1968 all Cougars with manual transmissions originally came with Thermactor smog or air injection emissions systems in all 50 United States.
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1968 - 1970 390GT - 427-4V - 428CJ Thermactor Smog Components
(Click Here for More Information or to Order)
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1969 Boss 302 Eliminator Thermactor Smog Components
(Click Here for More Information or to Order)
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1970 Boss 302 Eliminator Thermactor Smog Components
(Click Here for More Information or to Order)
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