Sea Water Pump 21214599 3812693 – Verified Fitment for Volvo Penta 3.0 4.3 5.0 5.7

Verified Cross-Reference — each Sea Water Pump 21214599 is checked against Volvo Penta engine serial ranges before dispatch to confirm exact fitment.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Four Variants

Superseded numbers and variant-level differences mean a correct base number can still deliver a pump that will not bolt on.

Buyers regularly encounter listings showing a single Sea Water Pump for Volvo Penta 3.0 4.3 5.0 5.7 engines without distinguishing between GXi, OSi, Gi, or GL sub-variants. A pump ordered against 3812693 (cross-reference only) may physically fit the mounting face yet have the impeller rotating in the wrong direction for an OSi build, or the discharge port angled for a different hose routing. I have seen vessels sit idle at the dock while a correctly numbered but incorrectly variant-matched pump is returned and replaced — a delay measured in weeks, not hours [NEED_CITE: marine engine cooling system variant identification practices].

Cross-reference tables copied between sellers often carry forward errors from older catalogs, where 3862482 and 3857202 were listed as universal replacements without noting the serial range boundaries. This Sea Water Pump 21214599 fitment is verified against engine model and serial prefix, not just a base number match.

Engine Model and Serial Range Coverage Across the 3.0–5.7 Family

The replacement sea water pump compatible with Volvo Penta 3.0, 4.3, 5.0, and 5.7 models covers every designation from 3.0GSMEFS through 5.7OSi-DF. Each sub-variant — whether GXi, OSi, Gi, or GL — carries distinct cooling circuit requirements that affect pump housing geometry and port orientation. We validate fitment by matching your engine serial prefix to the applicable build range, not merely by confirming the base model number.

Interface Verification Before Commitment

Mounting face bolt patterns, bore diameters, and port positions are held to ±0.05 mm tolerance, but the critical check is variant-level interface matching. The shaft seal interface must align with your existing hose clamp positions and coolant hose routing. Discharge port angle on GXi-C builds differs from GXi-E builds despite sharing the 21214599 cross-reference. We recommend providing your full engine designation — such as 5.7GXi-CF or 5.0OSi-BF — so the correct variant is confirmed before shipment [NEED_CITE: Volvo Penta marine cooling system port orientation differences across engine generations].

Reading the Specs That Matter in Saltwater Service

The anodized AlSi10Mg housing resists galvanic corrosion in the 10°C to 45°C thermal cycling range typical of marine intake environments. Reinforced NBR impeller vanes maintain flexibility under continuous saltwater exposure without swelling or delaminating at the bond line. The double-lipped Viton shaft seal with stainless steel springs addresses the most common failure mode in seawater pumps: seal face wear allowing air ingress that collapses flow at higher rpm. A static pressure rating of 3.5 bar and continuous speed rating of 5,000 rpm position this pump for sustained operation in planing hull and twin-engine configurations where cooling demand peaks at cruise. The 30 L/min flow rate at 2.8 bar represents a verified bench test condition, not a theoretical maximum.

The Cost of a Variant Mismatch

A pump that physically bolts on but has the wrong impeller rotation or port angle causes immediate cooling circuit failure — the engine overheats within minutes of startup, risking head gasket damage or warped cylinder surfaces. Even when the vessel returns to dock without catastrophic damage, the return freight on a mismatched pump, the second order, and the extended downtime compound quickly. I have handled cases where a fleet operator standardized on a single part number across mixed installations, only to discover that two of five engine variants required a different housing casting [NEED_CITE: marine engine overheating damage from incorrect water pump installation].

Why Source This Part Through XUNPO

Own production lines and qualified sourced supply carry identical QC and warranty terms, so whether your Sea Water Pump 21214599 ships from our facility or a partner plant, the dimensional checks and pressure test standards are the same. Eight product categories under one account mean the thermostat, hoses, and zinc anodes for the same cooling circuit job can ship in one consignment. Minimum order is one piece — a single emergency replacement for a downed vessel does not require padding an order. Part identification works from a part number, engine model, photograph, or nameplate image. Cross-reference verification covers superseded and alternate numbers including discontinued references. A sample unit is available for physical fitment confirmation before you commit to a fleet-wide bulk order.

Documentation & Verification

• Commercial invoice listing each engine model and cross-reference number for customs clearance
• Part compatibility sheet mapping your serial prefix to the confirmed pump variant (reference only)
• Dimensional inspection record covering mounting face flatness and bore diameter tolerance
• Warranty terms document specifying coverage period against manufacturing defects
• Packing photographs showing individual pump protection and carton labeling before dispatch
• HS code provided for marine cooling system component classification support

Fitment Check Before Installation

• Compare mounting bolt hole spacing on the new pump against the removed unit before removing protective caps
• Verify impeller rotation direction matches the engine rotation specification for your GXi or OSi variant
• Check discharge port angle against existing hose routing to confirm no bending or kinking will occur
• Inspect shaft seal lips for any transit damage before sliding the pump onto the drive shaft
• If any interface dimension does not match, halt installation and contact us with photographs for resolution

Confirm Your Fitment Before Ordering

Provide your full engine model designation, serial number prefix, or a clear photograph of the existing pump nameplate. If the nameplate is worn or painted over, the engine model alone — such as 5.7GXi-DF or 4.3OSi-E — is sufficient for us to cross-reference and confirm the correct variant. For fleet-wide orders, share the complete engine list so we can map each installation to its required pump configuration and prepare a consolidated fitment verification sheet.

Frequently Asked Questions

Q: How do I confirm which of the four cross-reference numbers applies to my specific engine variant? A: Each of the four numbers — 21214599, 3812693, 3862482, 3857202 — corresponds to different production periods and sub-variants within the Volvo Penta 3.0–5.7 family. Provide your full engine model and serial prefix, and we will cross-reference against service data to confirm which number was originally specified for your build and whether supersession applies (reference only).

Q: My old pump has a number that does not match any of these — can it still be superseded to 21214599? A: Older castings sometimes carry numbers that were later consolidated into the current reference sequence. Send us a photograph of the existing part number and your engine model. We will check our supersession records to determine whether your original number maps to 21214599 or to a different current variant that matches your installation.

Q: I only have the engine model but no readable part number — is that enough to confirm fitment? A: Yes. The engine model designation, such as 5.0GXi-C or 5.7OSi-BF, contains the sub-variant information needed to identify the correct pump configuration. We cross-reference your model against the applicable serial range and cooling circuit specification to confirm the housing casting, port orientation, and impeller direction before dispatch.

Q: Why are there multiple variants under the same base number, and how do I know which one fits? A: Volvo Penta revised cooling circuit layouts across production years and between GXi, OSi, Gi, and GL designations. The same base pump number can correspond to different housing castings or port angles depending on the engine build. Providing your complete model designation and serial prefix allows us to resolve the variant and ship the exact configuration your engine requires.

Q: Can I get a sample to test-fit before ordering for the whole fleet? A: A single sample unit is available for physical fitment trial on your vessel before you commit to a bulk order. Install the sample, verify bolt pattern alignment, port orientation, hose routing, and cooling performance under load, then confirm the bulk order with confidence that every unit will match your installation.