Mercury MerCruiser Bravo Drive Lube Bottle with Connector & Cap | 8M0075709

Mercury MerCruiser Bravo Drive Lube Bottle with Connector & Cap | Part 8M0075709

Part Number: 8M0075709
Brand: Mercury Marine / Quicksilver
Official Product Type: Drive Lube Bottle — Includes Connector and Cap
Category: Sterndrive Maintenance Tools & Accessories

What It Does

This is the OEM gear lube fill bottle designed specifically for servicing the Bravo sterndrive lower unit. It includes the connector fitting and cap required to fill the drive with gear lube through the fill port without spilling or introducing air. The bottle and connector system ensures a clean, controlled fill that matches the Bravo drive's fill port design — generic bottles or pumps may not seal correctly on this application, leading to incomplete fills or lube contamination.

Kit Contents

• Drive lube fill bottle
• Connector fitting (mates to Bravo drive fill port)
• Cap

Gear lube is not included. See related products below for compatible Mercury gear lube.

System

MerCruiser Bravo sterndrive lower unit lubrication system. The drive lube bottle is used during the gear lube drain-and-fill service procedure to introduce fresh gear lube into the lower unit through the fill port. Proper fill technique — filling from the bottom drain/fill port upward until lube appears at the upper vent — is essential to avoid air pockets in the gear housing.

Compatible Applications

Verify fit using your drive model and serial number against the Mercury parts diagram.

• MerCruiser Bravo One sterndrive — serial number 1G400000 and up
• MerCruiser Bravo Two sterndrive — serial number 1G400000 and up
• MerCruiser Bravo Three sterndrive — serial number 1G400000 and up

Not confirmed for Alpha One or earlier Bravo production ranges. Confirm by serial number and parts diagram before ordering.

Serial Requirements

This bottle is specified for Bravo drives from serial number 1G400000 and up. Earlier Bravo production ranges may use a different fill bottle or connector. Always confirm against the Mercury parts diagram for your specific drive serial number before ordering.

Dimensions

Compact handheld bottle sized for single-drive gear lube service. Exact volume capacity varies — confirm the quantity of gear lube required for your drive model from the Mercury service manual before purchasing lube. Typical Bravo drive capacity is approximately 32 fl oz (946 mL) per drive.

Related Parts

Used together for a complete Bravo drive gear lube service:

• Mercury Quicksilver High Performance Gear Lube – 858058KC1
• Mercury Quicksilver High Performance Gear Lube 5 Gallon 858008K01
• Mercury MerCruiser Quicksilver SAE 90 High Performance Gear Lube 8M0222066
• Mercury High Performance Gear Lube 8M0222055 – 5 Gallon Pail
• Mercury MerCruiser Gear Lube Pump Kit 8M0072135 — alternative pump-style fill tool
• Mercury MerCruiser Quicksilver Bravo Lower Gear Case Seal Kit 76868A04 — replace seals at lube service
• Mercury MerCruiser Quicksilver Bravo 3 Lower Unit Gear Housing Complete 8M0046738

Service Interval

Gear lube should be changed annually or every 100 hours of operation, whichever comes first — or any time the lube appears milky, discolored, or contaminated with water or metal particles. The drive lube bottle is a reusable service tool; inspect the connector and cap for wear or cracking at each use and replace if the seal is compromised.

Technical FAQ

Does this bottle come with gear lube?
No. This is the fill bottle and connector tool only. Gear lube must be purchased separately. See the related products above for compatible Mercury High Performance Gear Lube options.

Can I use a generic pump or bottle instead?
Generic pumps may not seal correctly to the Bravo fill port, which can result in an incomplete fill or lube contamination. The OEM bottle and connector are designed to mate precisely with the Bravo fill port for a clean, controlled fill.

How do I know when the drive is full?
Fill from the lower drain/fill port upward. The drive is full when gear lube flows steadily from the upper vent hole with no air bubbles. Install the upper vent plug first, then the lower fill plug — in that order — to prevent siphoning.

What gear lube does the Bravo drive use?
Mercury High Performance Gear Lube (SAE 90) is the specified lubricant for Bravo sterndrives. Confirm the correct specification and capacity for your specific drive model in the Mercury service manual.

Parts Desk Insights

Best use case: Annual Bravo sterndrive gear lube service on boats with serial 1G400000 and up. This bottle is the correct OEM fill tool for this production range and eliminates the guesswork of adapting a generic pump to the Bravo fill port. Shops servicing multiple Bravo drives should keep one on hand as a dedicated service tool.

Common mistakes:

• Buying lube without the bottle — the Bravo fill port requires the correct connector to seal properly. A generic pump or squeeze bottle without the right fitting will not seat correctly and can result in an incomplete fill or a mess.
• Not confirming the serial number range — this bottle is specified for 1G400000 and up. Earlier Bravo drives may require a different fill tool. Always check the parts diagram for your serial number.
• Installing plugs in the wrong order — always install the upper vent plug before removing the fill bottle and installing the lower plug. Reversing the order causes lube to siphon back out of the drive.
• Underfilling the drive — the drive must be filled until lube flows from the upper vent with no air. Stopping early leaves air pockets that accelerate gear and bearing wear.
• Not inspecting the lube before draining — milky or water-contaminated lube indicates a seal failure. If the drained lube is contaminated, replace the lower unit seals before refilling.