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Home > Exhaust > Exhaust Studs and Nuts > EXHAUST NUT, 12MM CATALYTIC CONVERTER 17MM HEX
“EXHAUST HEADER 13B, 79-92 4&6-PORT DUAL OUTLET” has been added to your cart. View cart
EXHAUST NUT, 12MM CATALYTIC CONVERTER 17MM HEX

EXHAUST NUT, 12MM CATALYTIC CONVERTER 17MM HEX

12mm x 1.25 (fine thread) Nut for catalytic converter studs

EXHAUST NUT, 12MM CATALYTIC CONVERTER 17MM HEX

Mazda Logo
SKU: 40-3550-8118
Manufacturer SKU: 8118-40-355

EXHAUST NUT, 12MM CATALYTIC CONVERTER 17MM HEX

$12.07


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    EXHAUST HEADER 12A, 84-85 RX7 AUTOMATIC TRANSMISSION

    Racing Beat 12A Exhaust Header, 84-85 RX7 Automatic Transmission

    This Streetable Header/Collector is designed for a bolt-on installation, when used with the appropriate Power Pulse Presilencer in all 1984-85 RX-7 (12A – Automatic Transmission) models. The combination of this Header/Collector and the appropriate presilencer replaces the stock exhaust manifold and all catalytic converters, along with any intermediate pieces of tubing.

    The Header/Collector assembly is constructed with .120-inch wall, mandrel-bend, mild steel tubing for increased durability. Both flanges are flame-cut from .4375-inch thick steel plate for positive gas sealing. An outlet gasket is included. An engine-to-header gasket is available separately if needed.

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  • EXHAUST HEADER 13B, 86-92 RX7 NON-TURBO

    EXHAUST HEADER 13B, 86-92 RX7 NON-TURBO

    Racing Beat 13B 6 Port Exhaust Header, 86-92 RX7 Non-Turbo

    Racing Beat’s rotary exhaust Header/Collector is designed for a bolt-on installation, when used with the appropriate Power Pulse Presilencer, in all 1986-92 non-turbo RX-7s. The combination of this Header/Collector and the appropriate presilencer replaces the stock exhaust manifold and all catalytic converters, along with any intermediate pieces of tubing. (In this application, the presilencer will bolt-up to the factory Y-pipe.)

    The Header/Collector assembly is constructed with .120″ wall, mandrel-bent, mild steel tubing (2″ OD primary, 2.5″ OD secondary) for excellent durability and noise suppression. Both flanges are laser cut from 7/16″ thick steel plate for positive gas sealing. An outlet gasket is included. An engine-to-header gasket is available separately if needed. This header is equipped with an oxygen sensor fitting.

    SKU: 16130
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  • EXHAUST STUD, ROTARY HEADER STUD

    EXHAUST STUD, ROTARY HEADER STUD

    Mazda Logo

    Rotary Header Stud All 74-92
    Stud, rotor housing for exhaust manifold

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  • EXHAUST HEADER 12A, 79-85 RX7 DUAL OUTLET

    EXHAUST HEADER 12A, 79-85 RX7 DUAL OUTLET

    Racing Beat 12A Exhaust Header, 79-85 RX7 Dual Outlet

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    Mazda Logo

    Exhaust Nut, 10X1.50 All 74-92 rotor housing stud

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    Racing Beat 13B Exhaust Header, 74-78 No Flange. Will not work on the Pick Up

    This rotary exhaust Header/Collector (less outlet flange) is ideal for RX-2, RX-3, RX-4, and COSMO (does not fit rotary pickup) custom exhaust installations. The flame-cut, .5-inch thick engine flange provides positive sealing and alignment. By integrating the collector with the header we reduce the effort and cost in completing the exhaust system. Engine-to-pipe gaskets are not included but are available separately. An Air Control and Check Valve Cover Plate is required when using this header with a stock intake system. 

    If the stock resonator is eliminated during installation of this unit, we strongly recommend selecting a Power Pulse Presilencer and installing it in place of the resonator to maintain a pleasant noise level and character.

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    The Racing Beat Universal Power Pulse PR-Extreme RX-7 Muffler is manufactured by the same exhaust components manufacturer that has produced the “tried and  proven” First Generation RX-7 Power Pulse mufflers (1979-80, 1981-82, and 1984-85) since the mid-1980s.  Utilizing a heavy-walled canister shell and extremely durable heat and noise insulating materials, the Racing Beat Power Pulse PR-Extreme RX-7 Muffler is engineered for the high exhaust gas temperatures found in rotary engine applications. 

    The main body of the muffler canister measures 8 inches in diameter and 18 inches in length. The dual outlet tips are completely chrome-plated with straight-cut outlet.

    Now may be the time to consider replacing the old rubber muffler hangers on your RX-7. New replacement hangers will ensure correct alignment of the RX-7 muffler canister and tip position in the bumper opening.

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