Mercury MerCruiser Quicksilver Trim Cylinder Bushing 807073 | Bravo I II III X XR XZ

807073 — OEM Trim Cylinder Pivot Bushing

What This Bushing Does

The 807073 is the trim-cylinder pivot bushing used at the anchor-pin mounting locations on MerCruiser Bravo sterndrives. Each trim cylinder is retained at both a front and rear pivot point by an anchor pin and bushing assembly. The bushing supports the pin, absorbs load as the drive trims and tilts, and maintains proper cylinder alignment throughout the trim range.

Mercury’s current product information identifies 807073 specifically for Bravo One, II, III, XR, and XZ sterndrives. Detailed trim-cylinder diagrams show the bushing at both front and rear anchor-pin positions, with a typical complete two-cylinder assembly requiring four bushings total.

Compatible Applications

• Bravo One
• Bravo Two
• Bravo Three
• Bravo X
• Bravo XR
• Bravo XZ

Confirm the exact sterndrive model and power-trim cylinder diagram before ordering.

Diagram Position

807073 appears in the trim cylinder anchor-pin / mounting hardware diagram at both front and rear pivot positions. It is a mounting bushing only — not an internal hydraulic piston seal or piston component. Typical diagram layout for a two-cylinder Bravo trim assembly:

• 2 × 807073 at the front anchor-pin location
• 2 × 807073 at the rear anchor-pin location
• 4 total bushings per complete assembly

Related Components

807073 installs alongside these trim-cylinder pivot hardware components:

• 44167A1 — Front pivot / anchor pin
• 44166 — Rear pivot / anchor pin
• 44164 — Washer
• 44163 — Washer
• 8M0204653 — Nut
• 14842 — Cap
• 805272 — Retaining ring
• 44165 — Predecessor bushing (superseded by 807073)

Mercury specifically recommends inspecting the related pin threads and caps when replacing this bushing.

Superseded Part Numbers

• 44165 → 807073 (Mercury parts data identifies 807073 as the current replacement for 44165)

Current service number: 23-807073

When to Replace

• Excessive trim-cylinder pivot play or slop
• Ovaling or visible wear in the bushing bore
• Cracking or distortion of the bushing material
• Corrosion or deterioration at the pivot points
• Loose or noisy trim-cylinder movement
• Wear found during anchor-pin or trim-cylinder service

Service Interval

Mercury does not publish a fixed hour or calendar interval for this bushing. Inspect the trim-cylinder pivot points during annual service or any time noisy, loose, or uneven trim behaviour is observed. Replace as a set if wear is found at any position — if one bushing is worn, the others have typically seen comparable use.

Installation Notes

• Inspect both front and rear trim-cylinder pivot points
• Check anchor pins (44167A1, 44166) for wear, corrosion, or thread damage
• Inspect washers, nuts, caps, and retaining rings while the assembly is apart
• Check hydraulic hoses for chafing or damage at the same time
• Install to the depth and orientation specified in the applicable Mercury service manual

Technical FAQ

Q: Do I need to replace all four bushings at once?
Not required, but recommended. If one bushing shows visible wear, the others in the same assembly have typically seen the same load cycles. Replacing all four at service time avoids a repeat job shortly after.

Q: Is 807073 the same as 44165?
44165 is the predecessor part that supersedes to 807073. If your parts list shows 44165, order 807073 — it is the current replacement. See also: 44165 listing.

Q: Is this a hydraulic seal or an internal piston part?
No. 807073 is the external pivot bushing at the trim-cylinder mounting / anchor-pin location. It is not an internal hydraulic cylinder seal, O-ring, or piston component.

Parts Desk Insights

Best use case: This is the correct bushing to order when a Bravo drive customer reports noisy, sloppy, or uneven trim-cylinder movement and the anchor pins and pivot points are being serviced. It covers Bravo One through XZ and is a straightforward OEM replacement for the worn or corroded bushing at the cylinder mounting points.

Common issue: Customers sometimes confuse this pivot bushing with internal trim-cylinder hydraulic seals or piston components. The 807073 is strictly the external anchor-pin bushing where the cylinder body pivots at its mounting points — not inside the hydraulic cylinder itself.