ETX/CAT is standard equipment on all Indmar 5.7L premium V-8 electronic fuel injected (EFI) inboards. These are the first marine engines to earn CARB’s Four Star Rating for marine engines awarded for Super UltraLow Emissions.

Indmar Products Company, Inc. has announced the Industry's first production-ready catalytic converter system ETX/CAT (Extreme Tuned Exhaust with Catalyst), patent pending. Starting this summer the ETX/CAT will be standard equipment on all 2007 Indmar 5.7 Liter premium electronic fuel injected (EFI) inboard engines, according

The Indmar catalyst system, dubbed ETX/CAT (Extreme tuned Exhaust with catalyst) is a first for production gasoline inboard engines. It significantly reduces exhaust emissions to less than 5 grams of combined hydrocarbons (HC) and oxides of nitrogen (NOx) as required by California Air Resources Board (CARB) upcoming regulations.

2024年5月21日 · Best bet will be to ask on www.themalibucrew.com as a coupler of really knowledgible Indmar people there. As far as I know it's same as the Monsoon 335/340/350 but different exhaust manifolds as include CAT and obviously some ECM tweaks. The Monsoons have very good reputation.

5.7L Catalyzed Exhaust ETX CAT Aluminum Exhaust Manifold. Port Side Catalyzed exhaust manifold for 5.7L small block GM Chevrolet Indmar Marine Engines. Use with 556202SPEC manifold gasket and 765006 elbow gasket 735020 V-band clamp 605004 straight and 605085 elbow fittings. _____

OEM Indmar 49-5180 RE-PLUMB KIT FOR 5.7 EXT CAT. This kit changes the water flow through the 5.7L ETX CAT exhaust manifolds (re-routes the cooling system). Fits V-Drive and inline applications. Note that the Re-plumb kit must be used when replacing manifolds that have not used the Re-plumb kit.

Catalyzed exhaust manifold for 5.7L GM Indmar Marine Engines. STBD. side. PRECISION FIT. GENUINE QUALITY. PROVEN PERFORMANCE.

Indmar’s ETX/CAT system reduces exhaust emissions, including carbon monoxide (CO), to provide a cleaner and safer boating experience for you and your family. ETX/CAT is standard on all 2007 model 5.7L Premium Electronic Fuel Injected (EFI) engines. Catalytic converters will be phased in for the rest of the line during the next two model years.

At Bakes Marine, we carry a variety of performance boat manifolds, exhausts, mufflers and parts that can keep your boat starting and running right. We stock a variety of Indmar products for Malibu Boats, like the Indmar ETX cat manifold.

A three-way catalytic converter such as that used on the Indmar ETX/CAT engine “converts” three harmful exhaust components—hydrocarbon (HC), carbon monoxide (CO), and nitrogen oxides (NOx)—into harmless compounds. Palladium and rhodium are coated onto a ceramic honeycomb designed to present the maximum surface area.