VETUS M4.35 – Marine Diesel Engine 33 HP

With 33 hp at 3000 rpm, the VETUS M4.35 is an inline four-cylinder marine diesel engine with 1.76 L displacement and naturally aspirated induction. Indirect fuel injection, a 22.0:1 compression ratio, and EN 590 diesel are specified for this configuration. Available 2:1, 2.4:1, and 3:1 drive ratios, plus Technodrive TMC60 or ZF15M transmission options, guide drivetrain selection for an inboard installation.

The engine has indirect heat-exchanger cooling and a 40 mm water-injected wet exhaust. Its forced-lubrication system lists 6.1 L oil capacity, while the cooling system lists 7 L coolant capacity. An SAE 5 flywheel housing, 12V 110-amp alternator, and 182 kg dry weight establish further checks for transmission matching, charging-system wiring, and engine-bed capacity.

Engine and Cooling Arrangement

This VETUS marine diesel engine uses a 78 x 92 mm bore-and-stroke layout with firing order 1-3-4-2. The naturally aspirated four-cylinder arrangement differs in output from the M4.45 while retaining the listed 1.76 L displacement, 3000 rpm rating, transmission family, cooling configuration, and SAE 5 flywheel housing.

A 7 L coolant capacity and 6.1 L oil capacity are specified for service planning. Mechanical and hydraulic steering compatibility is listed, but all steering, fuel, exhaust, cooling, electrical, and propulsion-system connections should follow the applicable VETUS installation documentation.

Why Choose the VETUS M4.35 Marine Diesel Engine

The M4.35 marine diesel engine is specified at 33 hp and 3000 rpm in a 1.76 L naturally aspirated inline four-cylinder package. Buyers can evaluate its 182 kg dry weight, SAE 5 flywheel housing, transmission options, three reduction ratios, 110-amp alternator, heat-exchanger cooling, and 40 mm wet exhaust alongside their vessel’s propulsion requirements. These defined specifications support a fitment-focused inboard engine comparison.

Warranty and Support

VETUS provides its 5 PLUS engine warranty program, consisting of 36 months of coverage for material and construction defects for eligible non-commercial pleasure-craft use, plus a subsequent 24-month limited coverage period for specified engine parts, subject to applicable operating-hour limits and warranty conditions. provides product-information support before purchase and assistance with order-related questions. Review warranty eligibility and current coverage details on before placing your order.

Before Ordering the VETUS M4.35 Marine Diesel Engine

Verify that your vessel requires the listed 33 hp at 3000 rpm output and supports the 1.76 L inline four-cylinder engine, SAE 5 flywheel housing, and 182 kg dry weight. You should choose the appropriate 2:1, 2.4:1, or 3:1 reduction ratio, confirm transmission compatibility, and plan fuel, cooling, wet-exhaust, steering, and 12V charging connections.