1136966 Nipple | Genuine Volvo Penta Part

🔧 Product Description

This is a genuine Volvo Penta nipple from the cooling system group, used as a threaded connection point for coolant hoses, lines or sensor fittings on the engine's cooling circuit. It is a small, precisely sized fitting that must match the port it threads into to seal correctly and maintain coolant flow. Fitment covers TWD, TAD, THD and DH series industrial and marine diesel engines.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD740GE
• Volvo Penta TWD740VE
• Volvo Penta THD102KB
• Volvo Penta THD102KD
• Volvo Penta THD102K-KB
• Volvo Penta DH10A
• Volvo Penta TAD740GE
• Volvo Penta TAD741GE

• Engine Family: TWD, THD, DH, TAD
• Year Range: Approximately 1980s-2000s

⚙️ Key Features

• Genuine Volvo Penta OEM part number 1136966
• System group: Cooling System
• Net weight: 0.018 kg
• Fits TWD740, TAD740/741, THD102 and DH10A series diesel engines
• Small threaded connector fitting for coolant lines and fittings
• Engine type: Volvo Penta 7-litre inline six-cylinder industrial / generator diesel
• System type: Thermostat-housing coolant connection

🔌 Function

The nipple provides a threaded connection port that joins a coolant hose, line or fitting to the engine's cooling system. It maintains a sealed path so coolant can circulate at the correct pressure without leaking.

⚠️ Common Signs of Failure

• Coolant weeping or dripping from the fitting or its threads
• Corrosion, pitting or scale build-up on the nipple body
• Damaged, stripped or cross-threaded connection that will not seal
• Loss of coolant level or pressure with no other visible leak source
• Cracking or deformation from over-tightening or age

🛠️ Service Notes

• Check the bore is clear before fitting — a nipple is often the feed point or restriction for a circuit, and debris left in it will starve whatever it supplies
• On tapered threads use the paste or liquid sealant specified for the fluid concerned, applied a few threads back from the open end; avoid thread tape on fuel and oil lines, where a shed shred travels downstream into filters, pumps and injectors
• Where the nipple seals on a face or against a washer rather than on its thread, fit a new sealing washer instead of curing a weep by overtightening
• Tighten to the figure in the workshop manual for your engine — these are small fittings in castings and are easily stripped, or the surrounding boss cracked
• Support the pipe or hose so it meets the nipple square and without side load, then check the joint at working pressure and temperature

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 425065 thermostat housing
• 425521 coolant pump
• 469732 delivery valve
• 424966 coolant pipe

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging