Mercury MerCruiser Quicksilver 3/8-24 Hex Nut 46335
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Part Details
- Part Number: 46335
- Service Format: 11-46335
- Brand: Mercury / Quicksilver
- Type: Hex nut — 3/8”-24 fine thread
- System: Exhaust, cooling, and engine hardware — exhaust riser mounting, seawater-pump assemblies, legacy cowl and engine mounting
- GTIN: 745061055087
- Weight: Approx. 5 g
- Replaces: 24883 (primary), 63912, 73710, 737101
- Note: 46335 is shared OEM hardware used across several different Mercury and MerCruiser assemblies. Required quantity varies significantly by application — confirm from the parts diagram. Do not identify this as a propeller nut; it is a general-purpose 3/8”-24 fastener used in exhaust, cooling, and mounting applications.
About This Part
Genuine Mercury / Quicksilver 11-46335 is an OEM 3/8”-24 fine-thread hex nut used across multiple Mercury and MerCruiser engine and accessory assemblies. Mercury parts diagrams show it in exhaust riser mounting hardware, seawater-pump assemblies, and selected legacy engine and cowl mounting locations across a range of MerCruiser V8 and outboard applications. Because 46335 is shared hardware rather than a single-application fastener, required quantity and torque specification must be confirmed from the parts diagram for the specific engine and assembly being serviced.
Compatible Applications
- MerCruiser exhaust manifold and riser assemblies — 3-inch and 6-inch riser hardware (up to 8 nuts per riser assembly)
- MerCruiser 5.0L / 5.7L V8 — exhaust riser mounting hardware
- MerCruiser 350 MAG Alpha / Bravo — exhaust riser mounting hardware
- MerCruiser 8.2L MAG / MAG H.O. — exhaust riser mounting hardware
- MerCruiser seawater-pump assemblies — selected pump mounting locations (typically 1 per assembly)
- Remote oil filter / exhaust riser installations — typically 4 nuts per assembly
- Selected legacy Mercury outboard top-cowl stud hardware
Confirm by exact engine model, serial number, and diagram position. Quantity varies from 1 to 8 nuts depending on the assembly — do not assume a single quantity applies across applications.
Hardware Pairings — Exhaust Riser Assemblies
On documented MerCruiser exhaust riser installations, 46335 is used with the following components — inspect all when servicing the riser:
- 46132 — 3/8” washer (used with the nut in riser hardware stacks)
- 8M0214991 — 3/8” stud
- 8M0022138 — 3/8” stud
Quantities of each component vary by riser configuration — confirm from the exhaust riser diagram for your specific engine.
When to Replace
Replace this nut if it shows any of the following:
- Stripped or damaged thread engagement on the mating stud
- Rounded hex flats from incorrect tool use
- Heavy corrosion affecting thread integrity
- Distortion from overtightening
- Poor thread engagement during reassembly
- Damage discovered during exhaust, cooling, or engine service
Exhaust riser nuts are particularly prone to corrosion and heat cycling damage — replacing the full hardware set during any riser service is strongly recommended.
Related Hardware
- Mercury MerCruiser Quicksilver 5/8-18 Flywheel Nut 8M0214915 — replaces 22339
- Mercury MerCruiser OEM Nut 37500
- Mercury MerCruiser Pinion Nut 11-35921
Cross-Reference Part Numbers
- Current OEM: 46335 / 11-46335
- Replaces: 24883, 63912, 73710, 737101
- GTIN: 745061055087
- Thread: 3/8”-24 fine thread
Parts Desk Insight
46335 is a shared 3/8”-24 fine-thread Mercury nut used in exhaust, cooling, and engine mounting applications — its strongest documented use is exhaust riser mounting, where it can be required in quantities of up to 8 per assembly. The most common ordering mistake is underestimating quantity when replacing riser hardware, and the most important installation note is using the correct Mercury torque specification for the specific assembly rather than a generic value based on thread size. When servicing exhaust risers, replace the full hardware set — nuts, washers, and studs — rather than just the nuts, as heat cycling and corrosion typically affect all components in the riser mounting stack simultaneously.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
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