{"product_id":"raw-water-pump-cross-piece-fits-volvo-penta-aq-diesel-engines-replaces-858467-18-3175","title":"Raw Water Pump Cross Piece – Fits Volvo Penta AQ Diesel Engines (Replaces 858467, 18-3175)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eRaw Water Pump Cross Piece\u003c\/strong\u003e is designed for Volvo Penta AQ diesel engines equipped with 6-screw pump covers. It fits a broad range of MD, TMD, TAMD, AD, AQAD, D, KAD, and KAMD series models including AD31, AD41, TAMD31, TAMD41, TAMD42, KAD42, KAD43, KAD44, KAMD43, KAMD44, and KAD\/KAMD300 variants. Located between the raw water pump and the pump drive gear unit, this coupler cross piece is critical for proper pump operation.\u003c\/p\u003e\n\u003cp\u003eThis aftermarket replacement directly interchanges with Volvo Penta 858467, Orbitrade Marine ORB15467, Crom Marine 115064, GLM GLM12852, and Sierra 18-3175.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePositioned between sea water pump and drive gear unit\u003c\/li\u003e\n  \u003cli\u003eEssential component for pumps with 6-screw covers\u003c\/li\u003e\n  \u003cli\u003eCheck and replace if pump becomes jammed or seizes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e858467\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3175\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOrbitrade Marine\u003c\/td\u003e\n        \u003ctd\u003eORB15467\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCrom Marine\u003c\/td\u003e\n        \u003ctd\u003e115064\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003eGLM12852\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eAD31L-A, AD31P-A, AD31XD, AQAD31A, MD31A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eTAMD31A, TAMD31B, TAMD31D, TAMD31L-A, TAMD31M-A, TAMD31P-A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eTMD31A, TMD31B, TMD31D, TMD31L-A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD32P-A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eAD41A, AD41B, AD41D, AD41L-A, AD41P-A, AQAD41A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eD41A, D41B, D41D, D41L-A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eTAMD41A, TAMD41B, TAMD41D, TAMD41H-A, TAMD41L-A, TAMD41M-A, TAMD41P-A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eTMD41A, TMD41B, TMD41D, TMD41L-A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD42B, KAD42P-A, KAMD42B, KAMD42P-A, TAMD42B, TAMD42WJ-A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD43P-A, KAMD43P-A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD44P-A, KAD44P-B, KAD44P-C, KAMD44P-A, KAMD44P-B, KAMD44P-C\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD300A, KAMD300A\u003c\/td\u003e\n        \u003ctd\u003e6-screw pump cover\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eRaw water pump coupler cross piece\u003c\/dd\u003e\n  \u003cdt\u003ePump Type\u003c\/dt\u003e\n  \u003cdd\u003e6-screw pump cover models\u003c\/dd\u003e\n  \u003cdt\u003eEngine Type\u003c\/dt\u003e\n  \u003cdd\u003eVolvo Penta AQ diesel inboards\u003c\/dd\u003e\n  \u003cdt\u003eLocation\u003c\/dt\u003e\n  \u003cdd\u003eBetween sea water pump and pump drive gear unit\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003e1 × Raw Water Pump Coupler Cross Piece\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eShut off the engine and disconnect the battery to ensure safe working conditions.\u003c\/li\u003e\n  \u003cli\u003eDrain coolant and remove the raw water pump from the engine block by removing the 6 cover screws.\u003c\/li\u003e\n  \u003cli\u003eSeparate the pump from the drive gear unit to access the coupler cross piece.\u003c\/li\u003e\n  \u003cli\u003eInspect the existing cross piece for wear, cracks, or deformation; replace if damaged.\u003c\/li\u003e\n  \u003cli\u003ePosition the new cross piece between the pump and drive gear unit, ensuring proper alignment.\u003c\/li\u003e\n  \u003cli\u003eReassemble the pump assembly and torque the 6 screws to manufacturer specifications in a cross pattern.\u003c\/li\u003e\n  \u003cli\u003eRefill coolant and check for leaks before restarting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if my pump uses a 6-screw cover?\u003c\/summary\u003e\n  \u003cp\u003eCount the screws holding your pump cover in place. This cross piece is designed for pumps with exactly 6 screws. If your pump has a different screw count, this part may not fit.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhy would my raw water pump jam?\u003c\/summary\u003e\n  \u003cp\u003eA jammed pump is often caused by a worn or broken coupler cross piece. Over time, this component can wear from continuous rotation, leading to slippage or failure. Inspect the cross piece if your pump stops turning or runs erratically.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse the old cross piece during pump maintenance?\u003c\/summary\u003e\n  \u003cp\u003eIt is not recommended. Even if the old cross piece appears intact, wear may not be visible. Replace it during pump service to prevent future failure and ensure reliable pump operation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this compatible with gasoline Volvo Penta engines?\u003c\/summary\u003e\n  \u003cp\u003eThis cross piece is designed specifically for Volvo Penta AQ diesel engines. Check your engine model against the compatibility table to confirm fitment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the cross piece be replaced?\u003c\/summary\u003e\n  \u003cp\u003eInspect the cross piece during routine pump maintenance or whenever the pump is disassembled. Replace it if you notice wear, cracks, or deformation, or every 3–5 years as preventative maintenance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing coupler cross piece?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include erratic pump operation, overheating, reduced cooling flow, or a jammed pump that won't turn. If you experience any of these, inspect and replace the cross piece as needed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":51025915248955,"sku":"3437","price":18.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/12_50bba34d-9df3-4078-b7b7-12d884b922b4.jpg?v=1772975122","url":"https:\/\/seasierra.com\/products\/raw-water-pump-cross-piece-fits-volvo-penta-aq-diesel-engines-replaces-858467-18-3175","provider":"SeaSierra","version":"1.0","type":"link"}