Sale!
![GROCO 1-1/2" Engine Flush Kit Adaptor [SSC-1500]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/groco-1-1-2-engine-flush-kit-adaptor-ssc-1500.webp)
GROCO 1-1/2″ Engine Flush Kit Adaptor [SSC-1500]
Original price was: $152.00.$80.33Current price is: $80.33.
Sale!
![GROCO 2-1/2" Engine Flush Kit Adaptor [SSC-2500]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/groco-2-1-2-engine-flush-kit-adaptor-ssc-2500.webp)
GROCO 2-1/2″ Engine Flush Kit Adaptor [SSC-2500]
Original price was: $233.60.$168.39Current price is: $168.39.
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![GROCO 2" Engine Flush Kit Adaptor [SSC-2000]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/groco-2-engine-flush-kit-adaptor-ssc-2000.webp)
GROCO 2″ Engine Flush Kit Adaptor [SSC-2000]
Original price was: $178.40.$136.06Current price is: $136.06.
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![GROCO 3/4" Engine Flush Kit Adaptor [SSC-750]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/groco-3-4-engine-flush-kit-adaptor-ssc-750.webp)
GROCO 3/4″ Engine Flush Kit Adaptor [SSC-750]
Original price was: $104.80.$53.46Current price is: $53.46.
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![Sea-Dog Inboard Motor Flush [521550-1]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/sea-dog-inboard-motor-flush-521550-1.webp)
Sea-Dog Inboard Motor Flush [521550-1]
Original price was: $15.20.$10.79Current price is: $10.79.
Sale!
![Sea-Dog Motor Flush Ear Muff [521500-1]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/sea-dog-motor-flush-ear-muff-521500-1.webp)