{"product_id":"volvo-penta-exhaust-mixing-elbow-861289","title":"Volvo Penta Exhaust Mixing Elbow 861289 | AD31 AD41 KAD42–44 300 OEM","description":"\u003ch2\u003eVolvo Penta Exhaust Mixing Elbow – 861289\u003c\/h2\u003e\n\n\u003ch3\u003ePart Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 861289\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 Water-Injected Exhaust Mixing Elbow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Status:\u003c\/strong\u003e Genuine Volvo Penta\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 860656\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Wet Exhaust – Exhaust Cooling and Discharge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Single water inlet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWet Exhaust Outlet:\u003c\/strong\u003e Approx. 102 mm (4.02 in.) I.D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Inlet:\u003c\/strong\u003e Approx. 38 mm (1.50 in.) O.D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. 4 kg (8.8 lb)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat This Part Does\u003c\/h3\u003e\n\u003cp\u003eThe 861289 is the OEM water-injected exhaust mixing elbow for a broad range of Volvo Penta diesel marine engines. It combines hot engine exhaust gas with raw cooling water at the elbow, cooling the exhaust before it exits through the wet-exhaust hose. This is a critical part of the engine’s wet-exhaust system — without proper mixing and cooling, exhaust temperatures can damage the hose and surrounding components.\u003c\/p\u003e\n\u003cp\u003eThe 861289 is the \u003cstrong\u003elater single-inlet configuration\u003c\/strong\u003e with the larger 38 mm water connection, and it directly replaces the earlier \u003cstrong\u003e860656\u003c\/strong\u003e elbow. If you are replacing a 860656, confirm the water-hose diameter and surrounding hardware match the 38 mm inlet before installing the newer elbow.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta AD31 \/ TAMD31 \/ TMD31\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AD41 \/ TAMD41 \/ TMD41\u003c\/li\u003e\n\u003cli\u003eVolvo Penta KAD32\u003c\/li\u003e\n\u003cli\u003eVolvo Penta KAD42 \/ KAMD42\u003c\/li\u003e\n\u003cli\u003eVolvo Penta KAD43 \/ KAMD43\u003c\/li\u003e\n\u003cli\u003eVolvo Penta KAD44 \/ KAMD44\u003c\/li\u003e\n\u003cli\u003eVolvo Penta KAD300 \/ KAMD300\u003c\/li\u003e\n\u003cli\u003eSelected Volvo Penta TAMD42\u003c\/li\u003e\n\u003cli\u003eSelected D5 \/ D7 industrial-marine configurations using a compatible 4 in. wet-exhaust arrangement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the exact engine model, exhaust configuration, and existing elbow part number before ordering. Earlier Volvo Penta elbows can look similar but use different inlet sizes or exhaust routing — matching by engine model and existing plumbing is the safest fitment method.\u003c\/p\u003e\n\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWet exhaust outlet:\u003c\/strong\u003e Approx. 102 mm (4.02 in.) I.D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater inlet connection:\u003c\/strong\u003e Approx. 38 mm (1.50 in.) O.D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Single water inlet, later-style\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSerial Number Fitment Notice\u003c\/h3\u003e\n\u003cp\u003eUse your engine serial number to confirm the correct exhaust elbow for your configuration. Volvo Penta diesel engines in these families used several elbow configurations over production, and the exhaust plumbing can differ between serial-number ranges even within the same engine model.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInternal corrosion or carbon buildup restricts exhaust or water flow\u003c\/li\u003e\n\u003cli\u003eCooling-water passages are partially or fully blocked\u003c\/li\u003e\n\u003cli\u003eRust, weeping, or leakage visible around the casting\u003c\/li\u003e\n\u003cli\u003eCasting is cracked, pitted, or severely corroded\u003c\/li\u003e\n\u003cli\u003eEngine exhaust backpressure increases unexpectedly\u003c\/li\u003e\n\u003cli\u003eExhaust temperatures become abnormally high\u003c\/li\u003e\n\u003cli\u003eWater intrusion into the exhaust system is suspected\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWet-exhaust elbows are exposed to both hot exhaust gas and raw cooling water simultaneously, causing internal deterioration that is often not visible from the outside. Volvo Penta recommends inspection at regular service intervals — a blocked or corroded elbow can cause overheating and serious engine damage.\u003c\/p\u003e\n\n\u003ch3\u003eService Interval\u003c\/h3\u003e\n\u003cp\u003eInspect the exhaust mixing elbow annually and at each major service. Replace proactively at the first sign of internal restriction, corrosion, or external leakage. On hard-working diesel engines, elbow replacement every 3–5 years is common practice regardless of external appearance, as internal water passages corrode from the inside out.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eInspect the exhaust hose, clamps, water hose connection, elbow gasket, and mating flange during replacement. Clean the mating surface and install a new gasket before fitting the elbow. The 861289 is commonly paired with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta exhaust hose 860396\u003c\/li\u003e\n\u003cli\u003eWater hose connection 858659\u003c\/li\u003e\n\u003cli\u003eBlanking flange 844093\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVerify unrestricted cooling-water flow through the new elbow before returning the engine to service. If the water passages showed any restriction, also inspect the raw-water pump impeller and heat exchanger for debris or scale.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does 861289 replace 860656 directly?\u003c\/strong\u003e\u003cbr\u003eA: Yes, 861289 is the current replacement for the earlier 860656. However, the 861289 uses a larger 38 mm water inlet, so confirm your water-hose connection size matches before ordering if you are replacing a 860656 installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if the elbow is failing if it looks okay from outside?\u003c\/strong\u003e\u003cbr\u003eA: Internal corrosion often progresses faster than external. Signs include increased exhaust backpressure, higher exhaust temperatures, reduced cooling-water flow at the exhaust outlet, or discoloration around the casting. If in doubt, removal and visual inspection of the internal water passages is the definitive check.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What gasket does this elbow use?\u003c\/strong\u003e\u003cbr\u003eA: Confirm the correct exhaust elbow gasket from the Volvo Penta exhaust assembly diagram for your engine model and serial number before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eAlternate Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta 861289\u003c\/li\u003e\n\u003cli\u003e860656 (superseded)\u003c\/li\u003e\n\u003cli\u003eGLM 51540\u003c\/li\u003e\n\u003cli\u003eHGE 1289\u003c\/li\u003e\n\u003cli\u003eMAR289INOX (stainless aftermarket reference)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eAt $906, this is one of the more expensive preventive maintenance items on Volvo Penta diesel installations — but a blocked or failed exhaust elbow can cause catastrophic overheating that costs far more to repair. The most common scenario is an elbow that has been in service for many years and looks serviceable externally but has lost most of its internal water-passage diameter to scale and corrosion. If a customer is chasing an overheating issue on an AD31, AD41, or KAD-family engine and the cooling system otherwise checks out, the exhaust elbow is a strong candidate. The other common issue is customers swapping from the older 860656 without checking the water-hose connection size — always confirm the 38 mm water inlet is compatible with the existing plumbing before ordering.\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43564051071012,"sku":"861289","price":906.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/ce4ea0a7-2245-4d52-8c1b-70c4b602d478.png?v=1788843277","url":"https:\/\/marisolmarine.com\/products\/volvo-penta-exhaust-mixing-elbow-861289","provider":"Marisol Marine Company","version":"1.0","type":"link"}