Keep your legacy Suzuki two-stroke running right on the money with the Suzuki Thermostat (17670-87D11). Sized for the DT90, DT100, DT150, DT175, and DT200 blocks, this OEM cartridge snaps into the factory housing and brings the powerhead up to operating temp in minutes—no cold-natured bog, no heat-soak warning beeps.

Built around a brass wax-charge element seated in a nickel-plated steel cup, the valve opens with surgical precision, metering coolant so combustion stays clean and oil molecules stay slippery. A pair of Viton® O-rings are molded to the body, sealing out saltwater without the fiddly gasket goop. Swap it with a 10 mm socket and you’re back on the water before the coffee cools.

Why it earns space in your spares kit

• Exact OEM fit – drop-in replacement for superseded 87D01/02/03/10 variants; no trimming or shimming.

• Corrosion-ready build – nickel shell and stainless spring shrug off brine and mineral scale.

• Stable engine temps – calibrated to maintain that sweet spot for fuel economy and piston life.

• Quick DIY swap – two cover bolts out, old stat lifts free, new one clicks home.

Install fresh every 200 hours and keep your Suzuki pulling hard, idling smooth, and living long.