Description
SIERRA 1/2-20 Permanent Oil Drain Kit with 42 in Hose – 18-7891 is a permanently mounted oil-pan drain system for marine engines using a 1/2-20 drain-plug thread. The 42-inch hose routes the engine oil to an accessible drain point, reducing mess and eliminating the need for a suction pump in compatible installations.
The kit includes the hose and hanger, a universal replacement oil-pan plug and an end cap. It is sized to pass through many common hull drains, but it does not fit later oil pans that use metric drain threads.
Key Features
- 1/2-20 oil-pan thread
- 42 in (106.7 cm) drain hose with hanger
- Permanently installs at the oil-pan drain point
- Can drain approximately 4 quarts in under 15 minutes without a pump
- Corrosion-resistant brass hose fittings
Specifications
- Product type: Permanent marine oil drain kit
- Oil-pan thread: 1/2-20
- Hose length: 42 in (106.7 cm)
- Includes: hose/hanger, replacement drain plug and end cap
- Not for: late-model oil pans using metric drain threads
Interchange
- Application-based service item; verify the engine oil-pan drain thread is 1/2-20 before ordering

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