Applicable Model: This fuel cap primer bulb kit is compatible with Fuxtec FX RM1855, Fuxtec FX RM1860, Fuxtec FX RM2055, Fuxtec FX RM2060, Fuxtec FX RM2060PRO, and Fuxtec FX RM1630. Suitable for 95% of mowers listed with T375, T475, and T575 engines. Not suitable for T675 engines. Highly Matching: Designed to precisely fit original equipment, this replacement fuel cap primer bulb kit ensures reliable performance with lawn mowers. Durable ABS: Constructed from high-quality ABS material with fine workmanship, this kit is durable and resistant to damage, helping extend service life. Fine Craftsmanship: Engineered with professional manufacturing standards and high accuracy for optimal performance, improving the overall operation of your lawn mower. 2 Sets Included: Kit contains 2 fuel caps and 2 primer bulbs, providing spare parts for replacement and repair needs.