Sierra Mercury Outboard Water Pump Kit - 4/4.5HP - S18-3446 - Replaces 46-70941A3

Water pump repair kit for Mercury/Mariner 4hp and 4.5hp outboard motors. Includes impeller (18-3039) and impeller plate (18-3139), manufactured to OEM specifications. Replaces Mercury Marine 46-70941A3; also compatible with GLM 12122.

Important: Specifications vary by product code. Confirm the required size or configuration before ordering.

Product code: S18-3446

Please compare the product code and specifications with the required application before ordering.