Sierra 18-99028 Oil Pan Gasket, Replaces Yamaha 67F-15312-00-00, Fits F115 F100 F80 F75 F90 LF115 Outboards

The Sierra 18-99028 Oil Pan Gasket is a replacement gasket engineered to seal the oil pan on a range of Yamaha outboard engines, restoring a tight seal against oil leaks and weeping at the pan-to-block joint. It is designed as a direct fit for the Yamaha F115, F100, F80, F75, F90, and LF115 outboard models, giving owners of these engines a straightforward way to address oil pan leaks during routine maintenance or a full engine rebuild.

Each Sierra part is manufactured to meet or exceed the specification of the original equipment component it replaces, so the gasket seats and seals the same way the factory part did. The gasket carries a multi-colored finish typical of composite gasket material and is supplied as a single unit, ready to install in place of the original Yamaha gasket. Because it is validated against the original equipment part numbers below, it can be ordered as a like-for-like replacement without needing to source a dealer-only Yamaha part.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99028
• Product Type: Oil Pan Gasket
• Weight: 0.13 pounds
• Color: Multi-Colored
• Unit Count: 1
• UPC: 808282293437
• GTIN: 00808282293437
• OEM Cross-Reference: Mallory 9-60346, 9-60347, 9-60348; Yamaha 67F-15312-00-00, 68V-15312-00-00

Fitment

• Yamaha F115 (2000-2014)
• Yamaha F100 (1999-2003)
• Yamaha F80 (1999-2003)
• Yamaha F75 (2003-2017)
• Yamaha F90 (2003-2017)
• Yamaha LF115 (2000-2017)

Replaces (OEM)

• Mallory 9-60346
• Mallory 9-60347
• Mallory 9-60348
• Yamaha 67F-15312-00-00
• Yamaha 68V-15312-00-00

Frequently Asked Questions

What does the Sierra 18-99028 Oil Pan Gasket fit? The 18-99028 is designed for Yamaha F115 (2000-2014), F100 (1999-2003), F80 (1999-2003), F75 (2003-2017), F90 (2003-2017), and LF115 (2000-2017) outboard engines.

Is the 18-99028 gasket the same as the original Yamaha part? Yes, Sierra 18-99028 is built to meet or exceed the original equipment part it replaces and is interchangeable with Yamaha OEM numbers 67F-15312-00-00 and 68V-15312-00-00.

What OEM part numbers does this gasket cross-reference? Sierra 18-99028 cross-references to Mallory 9-60346, 9-60347, and 9-60348, as well as Yamaha 67F-15312-00-00 and 68V-15312-00-00.

How much does the Sierra 18-99028 Oil Pan Gasket weigh? This oil pan gasket weighs 0.13 pounds.

How many gaskets come in a package? The 18-99028 is sold as a single unit, one oil pan gasket per package.

Will this gasket fit an F90 Yamaha outboard? Yes, the Sierra 18-99028 fits Yamaha F90 outboards from the 2003-2017 range.

Does this gasket fit the Yamaha F100? The 18-99028 covers the Yamaha F100 outboard for model years 1999-2003.

Is Sierra 18-99028 a genuine Yamaha part or an aftermarket replacement? It is a Sierra-manufactured aftermarket gasket built to match or exceed the original equipment specification of the Yamaha oil pan gasket it replaces.

What color is the 18-99028 gasket? The Sierra 18-99028 Oil Pan Gasket has a multi-colored finish, typical of composite gasket construction.

Does the Sierra 18-99028 fit the LF115 model? Yes, this gasket fits the Yamaha LF115 outboard for the 2000-2017 model years.

When would I need to replace this oil pan gasket? Replacement of the 18-99028 is typically needed when an oil pan is removed for service or when oil seepage appears at the pan-to-block joint on a covered Yamaha F-series outboard.

Does Sierra 18-99028 fit the F75 outboard? Yes, it is designed to fit the Yamaha F75 outboard covering model years 2003-2017.