Volvo Penta Exhaust Water Injection Gasket 859107 – MD Series Classic Diesel
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Volvo Penta 859107 – Exhaust Water Injection Gasket
Part Number: 859107
Brand: Volvo Penta
Type: Exhaust Water Injection Gasket (OEM)
System: Exhaust – Water Injection Elbow / Flange Connection
Engine Family: MD Series Classic Marine Diesel
Weight: 0.02 kg
Related Earlier Number: 800326
The Volvo Penta 859107 is a genuine OEM exhaust water injection gasket used at the water injection elbow or flange-end exhaust connection on classic Volvo Penta MD-series marine diesel engines. This is a model-specific exhaust sealing gasket — it should be matched by part number and engine model, not by appearance or size alone.
Compatible Applications
- Volvo Penta MD1B
- Volvo Penta MD2B
- Volvo Penta MD3B
- Volvo Penta MD5A
- Volvo Penta MD5B
- Volvo Penta MD5C
- Volvo Penta MD7A
- Volvo Penta MD7B
- Volvo Penta MD11C
- Volvo Penta MD11D
- Volvo Penta MD17C
- Volvo Penta MD17D
Fitment should be confirmed against your exact engine model and serial number before ordering. Exhaust gasket usage can vary by engine version, exhaust elbow configuration, and service history on older MD-series engines.
Serial Number Fitment Notice
On older Volvo Penta diesel engines, gasket fitment can vary by engine revision, exhaust elbow version, and prior service modifications. Always confirm part number 859107 against your engine model and serial number before ordering. Do not match by gasket appearance or size alone.
Diagram Position
Part 859107 seals the water injection elbow or flange-end exhaust connection — the point where the water-injected exhaust exits the engine and enters the exhaust elbow or adjacent exhaust fitting.
Alternate / Related Part Numbers
- Current active number: 859107
- Earlier related number: 800326
When to Replace
- Water injection elbow or exhaust connection is being removed for any reason
- Original gasket is leaking, torn, compressed, or brittle
- Visible exhaust seepage at the water injection elbow flange
- Any exhaust elbow or cooling/exhaust service where this joint is disturbed
Installation Notes
Install only on the correct Volvo Penta application. Verify the removed gasket against the part number, engine model, serial number, and exhaust connection shape before ordering. Always replace with a new gasket — reusing a compressed or aged gasket on an exhaust water injection joint risks repeated leaks. Torque the elbow fasteners to the Volvo Penta service manual specification.
Service Interval
Replace this gasket any time the water injection elbow is removed. Exhaust water injection gaskets are single-use components — they should not be reused once disturbed. On classic MD-series engines that have been in service for many years, proactive replacement during cooling or exhaust service is recommended even if no visible leak is present.
Technical FAQ
Q: Can I reuse this gasket if it looks undamaged?
A: No. Once removed, exhaust gaskets are considered single-use. The compression set from initial installation means a removed gasket will not seal reliably on reinstallation.
Q: Is 800326 the same as 859107?
A: 800326 is an earlier related number associated with this gasket on classic MD-series engines. Use 859107 as the current ordering number. If you have a very old parts reference showing 800326, confirm against the current Volvo Penta diagram for your engine before ordering.
Q: How do I tell this gasket apart from other MD-series exhaust gaskets?
A: By diagram position and part number. MD-series exhaust assemblies can use several different gaskets at different connection points. Identify the exact location — water injection elbow flange — in the Volvo Penta exhaust diagram for your engine model and serial number.
Parts Desk Insights
Classic MD-series Volvo Penta diesel engines have been out of production for decades, but they remain in service in many boats and generator sets. The exhaust water injection gasket is one of the most commonly disturbed seals during cooling and exhaust work on these engines, and it’s inexpensive enough that there’s no reason to reuse the old one.
The most common customer issue is ordering by visual match rather than part number. Several gaskets in the MD-series exhaust circuit look similar in shape and size but seal different positions. Confirming the part number against the water injection elbow location in the applicable diagram is the fastest way to get the right part on the first order.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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