20705901 Hose Clamp | Genuine Volvo Penta Part

🔧 Product Description

A genuine heavy-duty approximately 4-inch T-bolt clamp used on compatible Volvo Penta large-diameter charge-air, exhaust or cooling hose connections. The T-bolt design provides high and even clamping force around the hose.

🚤 Compatibility

• Engine Family: D, TAD

Full model list at the end of this description.

⚙️ Key Features

• Approximately 4-inch clamp size
• T-bolt and nut design provides higher retention than a light worm-drive clamp
• Wide band distributes load around large charge-air or exhaust hose connections
• Suitable for high-vibration and elevated-temperature engine service
• Must be tightened to the applicable clamp specification without cutting the hose
• Confirm hose outside diameter and connection type before ordering
• 2 used per assembly

🔌 Function

Applies uniform clamping force around a large-bore hose connection to prevent movement and leakage.

⚠️ Common Signs of Failure

• The band or T-bolt is cracked, stretched or corroded
• The hose leaks or moves despite correct tightening
• The nut seizes or threads are damaged
• The band cuts into or distorts the hose
• Replacement is required after over-tightening or repeated removal

🛠️ Service Notes

• Match the clamp to the hose outside diameter so the band closes well within its working range rather than at the very end of its travel
• Position it over the spigot behind the bead or barb, with the screw where a driver or spanner can still reach it once everything is refitted
• Tighten to seal, not to crush — an over-tightened worm-drive clamp cuts into soft hose and starts the leak you were trying to stop
• Renew clamps when a hose is changed rather than reusing them, and keep band, housing and screw all marine-grade stainless so the clamp does not corrode against itself
• Where two clamps are fitted to one connection, stagger the screw heads and recheck both after the first running period

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20705901 → Supersedes 85110990

OEM / Related Numbers

• 85110990 earlier number superseded by this part

Aftermarket / Verified Equivalents

• SRP: HC-35760

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D11C1-A MP, D11C3-A MP, D11C2-A MP, D11C4-A MP, D11B3-A MP, D11B4-A MP, D11B2-A MP, D11B1-A MP
• Volvo Penta TAD1140-42VE
• Volvo Penta TAD1150-52VE
• Volvo Penta TAD1170-72VE
• Volvo Penta TAD1180-83VE
• Volvo Penta TAD1340VE
• Volvo Penta TAD1341VE
• Volvo Penta TAD1342VE
• Volvo Penta TAD1343VE
• Volvo Penta TAD1344VE
• Volvo Penta TAD1345VE
• Volvo Penta TAD1350VE
• Volvo Penta TAD1351-53VE
• Volvo Penta TAD1360-62VE
• Volvo Penta TAD1363-65VE
• Volvo Penta TAD1371-75VE
• Volvo Penta TAD1381-85VE