FASWORX Drain Plug Replacement for Volvo Penta Manifold — 2-Pack with O-Rings & Retaining Straps for 4.3L, 5.0L, 5.7L

FASWORX two-pack drain plugs replace Volvo Penta manifold drain plug assemblies (part numbers 3849500, 3849892, 21114522) for 4.3L, 5.0L and 5.7L engines.

These nylon drain plugs come complete with O-rings and retaining straps designed to fit the manifold block drain openings used on many Volvo Penta sterndrive and inboard engines. They offer a straightforward replacement for worn or lost plugs, restoring a watertight seal at the manifold drain point and preventing leaks or water ingress when the engine is stored or maintained.

Will these plugs fit my Volvo Penta 4.3L, 5.0L or 5.7L manifold?

Yes — the FASWORX drain plugs are made to match the dimensions and mounting method of the OEM drain plug assemblies that use part numbers 3849500, 3849892 and 21114522. They are intended specifically for the manifold block drain locations on common Volvo Penta engines in those displacements.

• Direct replacement for listed part numbers
• Designed for manifold block drain openings on 4.3L, 5.0L, 5.7L engines
• Includes O-ring and retaining strap for correct fit

How do these drain plugs install and seal?

Installation is simple: seat the included O-ring, push the plug into the drain bore, and secure the retaining strap to the manifold anchor point. The nylon plug body compresses the O-ring against the bore to form a reliable seal; the strap prevents loss during service.

• Push-in fit with O-ring compression for a watertight seal
• Retaining strap secures plug to manifold to prevent accidental loss
• No special tools required for typical replacement

What materials and durability can I expect?

The plugs are molded from marine-grade nylon for chemical and saltwater resistance, while the O-rings are formulated to resist oil, coolant and seawater exposure. That combination delivers corrosion resistance and keeps parts flexible to maintain a seal under temperature changes.

• Marine-grade nylon plug body resists cracking and corrosion
• Elastomer O-ring compatible with coolant, oil and seawater
• Durable retaining strap prevents plug loss during maintenance

How many plugs are included and what parts are replaced?

This listing supplies two complete drain plug assemblies—each with plug, O-ring and retaining strap—so you can replace both sides or keep one as a spare. The assemblies replace Volvo Penta part numbers 2114522, 3849500 and 3849892 interchangeably on applicable manifolds.

• Two drain plugs per pack for dual replacements or spare on-board
• Replaces part #s 2114522, 3849500, 3849892 for manifold blocks
• Ready-to-install kits include plug, O-ring and strap

Who is this for: boat owners, marine mechanics and DIYers who service Volvo Penta 4.3L, 5.0L and 5.7L engines and need a dependable, OEM-compatible drain plug replacement. It’s also suited for marinas and parts resellers who stock common maintenance items. If your engine’s manifold drain plug is worn, missing or leaking, this FASWORX two-pack gives you a quick, durable fix that restores proper drainage sealing without special tools or modifications.