Mercury 2-Stroke Oil Reservoir Cap Assembly for 135-250HP Outboards 43300A9

Mercury 2-Stroke Oil Reservoir Cap Assembly 43300A9 is a genuine Mercury/Quicksilver OEM replacement assembly designed for select Mercury and Mariner 135-250HP 2-stroke outboards. This complete assembly seals the remote oil reservoir while providing accurate oil level monitoring through the integrated float, sender, and wiring harness.

Compatible with the following:

• Select Mercury 135-250HP 2-stroke outboards
• Select Mariner 135-250HP 2-stroke outboards

Assembly Includes:

• Oil reservoir cap
• Float
• Oil level sender
• Wiring harness

Manufactured to Mercury Marine's OEM specifications, this oil reservoir cap assembly is engineered for proper fit, reliable oil level sensing, and long-lasting durability. Replacing a damaged cap or faulty sender assembly helps maintain accurate low-oil warnings and proper operation of the oil injection system.

For best performance and protection, Mercury recommends using only genuine Mercury/Quicksilver 2-stroke outboard oil in compatible engines.

Quicksilver is Mercury Marine's official parts and accessories brand, offering the same OEM quality and fit as Mercury-branded components.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.

Replaces / supersedes Mercury part numbers: 43300A1, 99024A4.