11030743 Shaft | Genuine Volvo Penta Part

🔧 Product Description

This is a genuine Volvo Penta cooling system shaft (part number 11030743), a rotating component within the engine's coolant circulation assembly. It is also supplied as a component of repair kit 11990043, making it suitable either as a standalone replacement or as part of a full pump overhaul. It is specified for TD and TWD series industrial and generator-set diesel engines.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD1240VE
• Volvo Penta TWD1643GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TD164KAE
• Volvo Penta TWD1644-45GE
• Volvo Penta TWD1663GE
• Volvo Penta TWD1682-83GE
• Volvo Penta TWD1683GE-B
• Volvo Penta TWD1672-1673GE
• Volvo Penta TWD1744GE

• Engine Family: TWD, TD
• HP Range: Approximately 500-800 HP
• Year Range: Approximately 1990s - 2010s

⚙️ Key Features

• OEM Volvo Penta part number 11030743
• System group: Cooling System
• Included in repair kit 11990043
• Net weight: 0.415 kg
• Fits TD164, TWD1240, TWD16-series and TWD1744 industrial and generator-set diesel engines
• Engine type: Volvo Penta inline 6-cylinder 16-litre diesel

📋 Kit Contents

• Included in repair kit 11990043.

🔌 Function

The shaft transmits drive rotation to the coolant pump impeller so that coolant is circulated continuously through the engine and heat exchanger circuit. It runs in the pump bearing assembly and maintains concentric alignment of the impeller under load.

⚠️ Common Signs of Failure

• Coolant weeping or dripping from the pump seal or weep hole
• Audible bearing rumble, whine or grinding from the pump area
• Detectable radial play or wobble when the pump drive is moved by hand
• Visible scoring, pitting or corrosion on the shaft sealing surface
• Engine running hotter than normal or fluctuating coolant temperature due to reduced flow

🛠️ Service Notes

• Handle and store the shaft so the bearing journals and seal running surfaces stay unmarked — a nick on a seal track will cause a leak that no new seal will cure
• Remove the protective coating and check the shaft for straightness, scoring, pitting and stepped wear at the journals, splines and seal areas before fitting
• Lubricate journals, splines and seal surfaces with clean oil of the grade specified for the assembly as it goes together, and renew the seals and any single-use nuts or locking devices disturbed on removal
• Draw bearings and couplings on square with a press or drawing tool that loads only the correct race — hammering a bearing onto a shaft marks the races and can distort the shaft
• Set end float, backlash and shim thickness to the values in the workshop manual for your unit, then turn the assembly by hand to confirm it is free before applying power

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 11030740 - Related impeller
• 11030742 - Related spacer ring
• 11030662 - Related retaining ring
• 11030663 - Related spacer ring
• 1675763 - Related bearing
• 1676432 - Related sealing ring
• 11990043 - Related water-pump repair kit
• 11032164 - Related complete pumps
• 22331121 - Related complete pumps

📦 Condition

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