Sierra 18-2619-1 Outdrive Gasket Set - Replaces 27-64818A3, Fits MerCruiser 1, R, MR, Alpha 1 with Exhaust Tube

The Sierra 18-2619-1 Outdrive Gasket Set is a complete kit of gaskets and O-rings for servicing the bell housing and outdrive mounting area on compatible MerCruiser stern drives. It is built for drives designated 1, R, MR, and Alpha 1 with exhaust tube, and is used any time the outdrive is separated from the transom assembly, such as during gimbal bearing, u-joint, or bell housing service. The set contains five individual pieces: an 18-2743 outdrive gasket, an 18-2840 bell housing gasket, and three O-rings (18-7117, 18-7153, and 18-7170), so the technician has every sealing component needed for the job in one package rather than sourcing each part separately. The components are supplied as a display pack with a plastic material composition. Using a complete matched gasket set like the 18-2619-1, rather than reusing old gaskets or mixing in generic parts, helps ensure a proper seal against water intrusion and exhaust leakage at the outdrive-to-transom joint. The 18-2619-1 cross-references directly to the OEM Mercury/MerCruiser part numbers below, so it is a direct fit replacement for the original equipment set on applicable drives.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2619-1
• Product Type: Outdrive Gasket Set (Display Pack)
• Set Contents: 18-2743 Outdrive Gasket, 18-2840 Bell Housing Gasket, 18-7117 O-Ring, 18-7153 O-Ring, 18-7170 O-Ring
• Unit Count: 1 set
• Material: Plastic
• Weight: 0.08 pounds
• UPC: 808282120207
• Fitment: MerCruiser 1, R, MR, Alpha 1 with exhaust tube
• OEM Cross Reference: 27-64818A3, 27-94996A1, 27-94996Q2

Fitment

• MerCruiser 1, R, MR, Alpha 1 with exhaust tube

Replaces (OEM)

• 27-64818A3
• 27-94996A1
• 27-94996Q2

Frequently Asked Questions

What does the Sierra 18-2619-1 outdrive gasket set include? The 18-2619-1 set includes an 18-2743 outdrive gasket, an 18-2840 bell housing gasket, and three O-rings (18-7117, 18-7153, and 18-7170), for a total of five sealing components in one package.

Which drives does the 18-2619-1 gasket set fit? This Sierra gasket set is designated for MerCruiser 1, R, MR, and Alpha 1 outdrives equipped with an exhaust tube.

What OEM part numbers does 18-2619-1 replace? The Sierra 18-2619-1 outdrive gasket set replaces OEM numbers 27-64818A3, 27-94996A1, and 27-94996Q2.

How much does the 18-2619-1 outdrive gasket set weigh? It weighs 0.08 pounds.

Is a bell housing gasket included in this kit? Yes, the 18-2619-1 set includes an 18-2840 bell housing gasket along with the outdrive gasket and three O-rings.

What O-rings come in the Sierra 18-2619-1 kit? Three O-rings are included: 18-7117, 18-7153, and 18-7170.

What material are the gaskets and O-rings made of? The components in the 18-2619-1 set are made of plastic.

Is the 18-2619-1 the correct gasket set for an Alpha 1 outdrive? Yes, the 18-2619-1 set is specified for MerCruiser Alpha 1 outdrives, in addition to the 1, R, and MR drives, when equipped with an exhaust tube.

How many pieces are in the 18-2619-1 outdrive gasket set? The kit contains 5 individual pieces: one outdrive gasket, one bell housing gasket, and three O-rings, packaged as a single display pack.

What is the UPC for the Sierra 18-2619-1 gasket set? The UPC for this Sierra outdrive gasket set is 808282120207.

Does the 18-2619-1 set work on drives without an exhaust tube? The 18-2619-1 gasket set is specified for MerCruiser 1, R, MR, and Alpha 1 drives with exhaust tube; fitment for drives without an exhaust tube is not specified for this part.

Are the gaskets in the 18-2619-1 set sold individually as well? The 18-2619-1 set contains gasket 18-2743, gasket 18-2840, and O-rings 18-7117, 18-7153, and 18-7170, each identified by its own Sierra part number within this combined kit.