Match your engine type to an E-Z Heat product.
Then find the product at the bottom of the page.
E-Z Heat engine heaters will reasonably follow a contour, such as, on an oil tank. The heater cannot be installed over embossed numbers, ridges, or detents in the oil sump.
C-125 to O-300
E-165 to E-225
IO-360 to TIO-360
O-520, IO-520, TSIO-520
COMPATIBLE HEATER MODELS
270 or 360
441, 441/220, 470, 540*, 540/220*
441, 441/220, 470, 540*, or 540/220*
IO-550 & TSIO-550
440, 441, 441/220, 540*, or 540/220*
*Where space allows