{"product_id":"volvo-penta-21840806-trimming-cylinder-starboard","title":"Volvo Penta 21840806 Trimming Cylinder – Starboard DPH DPR Sterndrive","description":"\u003cp\u003eVolvo Penta 21840806 is a genuine OEM \u003cstrong\u003estarboard trimming cylinder\u003c\/strong\u003e for the hydraulic power-trim system used on selected DPH and DPR sterndrives. The cylinder raises and lowers the sterndrive under hydraulic pressure, allowing the operator to adjust drive trim for running angle, performance, and handling. This is the \u003cstrong\u003estarboard (right-hand) side cylinder only\u003c\/strong\u003e — sold individually.\u003c\/p\u003e\n\n\u003ch2\u003ePart Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 21840806\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Volvo Penta\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Hydraulic Trimming Cylinder – Starboard (OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 3888301\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaced By:\u003c\/strong\u003e 21840806 is the current active OEM number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Hydraulic Power-Trim – DPH \/ DPR Sterndrive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Starboard \/ right-hand side\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold As:\u003c\/strong\u003e Individual cylinder (not a pair)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDimensions \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~4.5 kg (estimated)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e OEM direct replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Port and starboard cylinders use different part numbers and are not interchangeable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta DPH-A sterndrive\u003c\/li\u003e\n\u003cli\u003eVolvo Penta DPH-C sterndrive\u003c\/li\u003e\n\u003cli\u003eVolvo Penta DPH-D1 sterndrive\u003c\/li\u003e\n\u003cli\u003eVolvo Penta DPH-E sterndrive\u003c\/li\u003e\n\u003cli\u003eVolvo Penta DPR-A sterndrive\u003c\/li\u003e\n\u003cli\u003eVolvo Penta DPR-B sterndrive\u003c\/li\u003e\n\u003cli\u003eVolvo Penta DPR-C sterndrive\u003c\/li\u003e\n\u003cli\u003eVolvo Penta DPR-D sterndrive\u003c\/li\u003e\n\u003cli\u003eVolvo Penta TSK DPH-A\u003c\/li\u003e\n\u003cli\u003eVolvo Penta TSK DPH-B\u003c\/li\u003e\n\u003cli\u003eVolvo Penta TSK DPH-E\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eVolvo Penta trim diagrams for DPH-D1 specifically identify 21840806 as the starboard cylinder. Fitment can vary by drive model, trim-system configuration, and production range. Always confirm part number 21840806 against your exact drive model and serial number before ordering. Volvo Penta used several trim-cylinder configurations across DPH, DPR, and later drive generations — the correct cylinder is determined by the drive and installation, not engine horsepower alone.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cp\u003eReplace this trimming cylinder when it develops hydraulic leakage, corrosion or scoring on the piston rod, excessive play at its mounting points, or can no longer reliably hold or adjust sterndrive position. At the same time, inspect hydraulic hoses, seals, bushings, and mounting hardware for wear or damage.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eThis cylinder installs on the \u003cstrong\u003estarboard side\u003c\/strong\u003e of the sterndrive trim assembly. Before installation, inspect the hydraulic hoses, fittings, bushings, and mounting hardware, and verify that the hydraulic system is clean and free of contamination. After installation, bleed and operate the trim system according to the applicable Volvo Penta service procedure and check thoroughly for leaks before returning the vessel to service.\u003c\/p\u003e\n\n\u003ch2\u003eAlternate \u0026amp; Superseded Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e21840806\u003c\/strong\u003e – Current active Volvo Penta OEM part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3888301\u003c\/strong\u003e – Previous Volvo Penta number, superseded by 21840806\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003eThis is the starboard trim cylinder only — not a complete pair. Because DPH and DPR systems use side-specific trim components, the most common ordering mistake is assuming one part number covers both sides. Before ordering, confirm whether the repair requires the starboard cylinder, the port-side cylinder, or both. This part is best suited for targeted starboard trim-cylinder replacement on DPH and DPR sterndrives where the original cylinder has developed a hydraulic leak or physical damage.\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43563989893156,"sku":"21840806","price":1152.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/9c1d3976-aa46-4aea-9d98-3cf974355536.png?v=1787349480","url":"https:\/\/marisolmarine.com\/products\/volvo-penta-21840806-trimming-cylinder-starboard","provider":"Marisol Marine Company","version":"1.0","type":"link"}