Mercury MerCruiser Quicksilver Thrust Washer 835467Q01

Mercury MerCruiser Quicksilver Thrust Washer — 835467Q01

What This Part Does

The 835467Q01 is the forward propeller thrust washer (also referred to as the thrust hub) used with selected Flo-Torq II, Flo-Torq III, and Flo-Torq SSR hub-system propellers. It installs on the propeller shaft ahead of the propeller and transfers forward thrust from the propeller through its designed thrust surface into the gearcase. The thrust washer must be matched to both the propeller shaft geometry and the specific hub system being installed — two washers that fit the same shaft can have different taper, shoulder, or thrust-surface geometry and are not interchangeable.

Compatible Applications

Compatibility depends on the propeller and hub system, not engine horsepower alone. Confirm by engine/drive model, serial number, propeller model, and Flo-Torq hub type.

MerCruiser Sterndrives:

• Alpha One
• Alpha One Gen II
• Bravo I

Mercury / Mariner Outboards:

• 40–60 HP BigFoot FourStroke
• 75–125 HP two-stroke and FourStroke
• 135–275 HP two-stroke
• Selected 2.5L DFI applications
• Selected 3.0L 225 and 250 HP applications

Additional Applications (hub/propeller dependent):

• Selected Force outboards
• Selected Johnson / Evinrude V6 applications
• Selected OMC V6/V8 sterndrives
• Honda 75–90 HP outboards
• Suzuki 140 HP FourStroke

Serial Number & Fitment Notice

Confirm the engine or sterndrive model, serial number, propeller model, and Flo-Torq hub type before ordering. Mercury specifically cautions that the correct thrust hub must be matched to the propeller being used. Two washers may fit the same propeller shaft but have different taper, shoulder, or thrust-surface geometry — the fit at the shaft is not sufficient confirmation on its own.

Flo-Torq Hub System Use

835467Q01 is the forward thrust washer in Flo-Torq hub installations and is also included as a component in Flo-Torq SSR hub systems. Typical related components in a complete Flo-Torq installation include:

• 835467Q01 — forward thrust washer (this part)
• Drive sleeve
• Aft adapter
• Propeller nut
• Tab or lock washer

The exact remaining hardware depends on the specific hub kit being installed. See related Flo-Torq hub kits below.

When to Replace

• Heavy scoring or galling on the thrust face or propeller-shaft contact area
• Visible deformation or wear on the thrust surface
• Corrosion or pitting
• Distortion from a propeller impact event
• Damage to the tapered or stepped mating surface
• Evidence that the propeller has been contacting the gearcase incorrectly
• Whenever a damaged propeller or spun hub is removed

Service Interval

Inspect the thrust washer whenever the propeller is removed for service, propeller replacement, or after any impact event. Replace whenever scoring, deformation, corrosion, or contact damage is found. The thrust washer should also be inspected any time a spun hub or damaged propeller is replaced.

Installation Notes

• Clean the propeller shaft and inspect the splines before installation
• Inspect the thrust washer mating surface for scoring or deformation
• Confirm the washer faces the correct direction (forward thrust surface toward the gearcase)
• Ensure the washer seats completely against the gearcase before installing the propeller
• Verify that the hub kit and propeller are designed to use 835467Q01 — confirm by propeller model and Flo-Torq hub type
• Inspect the aft adapter, tab washer, and propeller nut hardware while the propeller is off
• Install and torque propeller-retaining hardware according to the Mercury service procedure for the specific drive or outboard

Alternate & Superseded Part Numbers

• 835467Q01 — current Mercury / Quicksilver OEM number
• 12-835467Q01 — Mercury catalog prefix format
• 835467 — earlier Mercury number (superseded to 835467Q01)
• 8354671 — legacy diagram reference

Related Parts

• Mercury Quicksilver Flo-Torq II Hub Kit 835257K6
• Mercury Quicksilver Flo-Torq II Hub Kit 835257K1
• Mercury Quicksilver Flo-Torq II Hub Kit 835274Q1 (150–300 HP 4-Stroke & VMAX SHO)
• Mercury MerCruiser Flo-Torq SSR Hub 8M0101602
• Mercury MerCruiser Flo-Torq SSR HD Hub 8M0101601
• Mercury MerCruiser Drive Sleeve 835290Q1
• Mercury Propeller Nut Kit 8M0056235

Technical FAQ

Q: Is 835467Q01 a complete hub kit or just the thrust washer?
A: It is the individual forward thrust washer only — not a complete hub kit. For a complete Flo-Torq hub installation you will also need a drive sleeve, aft adapter, and propeller nut hardware. See the Flo-Torq hub kits linked above for complete sets.

Q: What is the difference between 835467 and 835467Q01?
A: 835467 is the earlier Mercury part number; 835467Q01 is the current superseding number. Both refer to the same forward thrust washer — 835467Q01 is the number to order.

Q: Will this thrust washer fit any propeller on the same shaft?
A: No. The thrust washer must match both the propeller shaft and the specific Flo-Torq hub system and propeller being used. Two washers can fit the same shaft but differ in thrust-surface geometry. Confirm by propeller model and hub kit type before ordering.

Q: When should I replace the thrust washer instead of just the propeller?
A: Inspect the thrust washer whenever the propeller is removed — especially after an impact or spun hub event. If the thrust face shows scoring, galling, deformation, or corrosion, replace it. It is inexpensive insurance on a propeller installation and failing to replace a damaged thrust washer can lead to uneven thrust loading.

Q: Is 835467Q01 compatible with Bravo II or Bravo III sterndrives?
A: Mercury diagrams associate 835467Q01 with Alpha One, Alpha One Gen II, and Bravo I applications. Bravo II and Bravo III use different propeller-shaft and hub configurations — confirm the correct thrust washer from the applicable Bravo II/III gearcase diagram.

Parts Desk Insights

The most common issue with 835467Q01 is customers ordering it as a standalone replacement without confirming it matches their specific Flo-Torq hub kit and propeller. This is the forward thrust washer — and while it fits a wide range of shaft configurations, the thrust surface geometry must match the hub system. If a customer is doing a full Flo-Torq service, the easiest approach is to order the complete hub kit (835257K6 or 835257K1 for most applications) which includes this washer along with the drive sleeve, aft adapter, and nut hardware. The individual thrust washer is most useful when only the washer itself is damaged and the rest of the hub hardware is serviceable.