Volvo Penta Seawater Pump Cover Screw Kit 21951334 (Set of 6)
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Volvo Penta Seawater Pump Cover Screw Kit – Part No. 21951334
Part Number: 21951334
Brand: Volvo Penta
Kit Contents: 6 screws
Supersedes: No documented earlier number – 21951334 is the current active OEM reference
Replaced By: Current – 21951334 is the active OEM number
Overview
This is a genuine Volvo Penta OEM screw kit containing 6 screws for the seawater (raw-water) pump cover on a wide range of Volvo Penta diesel engines. These fasteners secure the impeller pump cover during assembly and are the correct OEM hardware for the applicable pump cover service. As OEM fasteners, they are matched to the correct thread specification, material grade, and corrosion resistance for the marine cooling environment.
System & Diagram Position
Raw-Water / Seawater Cooling System – Impeller Pump Cover. This screw kit is used at the pump cover in the applicable Volvo Penta seawater pump assembly. Confirm the exact pump assembly and diagram position against your engine's parts breakdown before ordering.
Kit Contents
- 6 x OEM seawater pump cover screws (Volvo Penta part 21951334)
Compatible Applications
- Volvo Penta D2 yacht series
- Volvo Penta D3
- Volvo Penta D4
- Volvo Penta D6
- Volvo Penta D8
- Volvo Penta KAD32, KAD42, KAD43, KAD44, KAD300
- Volvo Penta AD31 / TAMD31
- Volvo Penta AD41 / TAMD41
- Volvo Penta MD30 / TMD30 / TAMD30 / AQAD30
- Volvo Penta MD40 / TMD40 / TAMD40 / AQAD40
- Other Volvo Penta engines using the compatible seawater pump cover assembly – confirm by engine serial number and pump diagram
Serial Number & Fitment Notice
Seawater pump configurations vary across engine families and production runs. Always confirm part number 21951334 against your engine serial number and the correct Volvo Penta seawater pump parts diagram before ordering — particularly on engines that may have had earlier pump or cover changes.
Service Interval
Volvo Penta recommends seawater pump impeller replacement annually or every 200–300 hours depending on engine model and operating conditions. Replace the pump cover screws any time the cover is removed, especially if the original fasteners show corrosion, thread wear, or reduced clamping force. Reusing corroded marine fasteners is not recommended.
When to Replace
Replace this screw kit when the pump cover fasteners are corroded, rounded, seized, stretched, or no longer torquing correctly. It is also best practice to replace them during any impeller service where the cover has been removed, particularly on engines with multiple seasons of service.
Installation Notes
Clean the cover and threaded holes thoroughly before installation. Tighten the screws evenly in a cross pattern to avoid cover distortion or sealing issues. Torque to the Volvo Penta specification for the applicable pump assembly. Apply a light marine-grade anti-seize to the threads if recommended by the Volvo Penta service procedure for the engine being serviced.
Related Parts
- Volvo Penta Seawater Pump Wear Kit 21951374 – wear components for the same pump family
- Volvo Penta Seawater Pump 21951476 – complete seawater pump assembly
- Volvo Penta Seawater Pump Cam 3589908 – pump cam for seawater pump service
- Volvo Penta Seawater Pump Screw Kit 21951302 – screw kit for smaller D1/D2/MD series pump covers
- Volvo Penta Seawater Pump Screw Kit 22125080 – screw kit for other pump cover applications
Parts Desk Insights
This screw kit is most commonly needed during annual impeller service on the D3, D4, D6, KAD, and TAMD engine families. The most frequent issue is discovering a corroded or seized cover screw mid-job on an engine that has had multiple seasons of service without fastener replacement. At this price point, it is worth including with any impeller or pump order as a standard service item — the cost of the kit is far less than the labor of reopening the pump for a stripped thread or a leak at the cover.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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