• 21390528 Idler Roller | Genuine Volvo Penta Part
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21390528 Idler Roller | Genuine Volvo Penta Part

21390528 Idler Roller | Genuine Volvo Penta Part

$261.09 AUD
$261.09 AUD
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Available from Volvo Penta international

Typically reaches our store in 10–14 business days

Availability checked daily with Volvo Penta

✓ Authorised Volvo Penta Dealer · Genuine Volvo Penta parts · Ships Australia-wide

🔧 Product Description

Steel deflection pulley used in the fan-on-crankshaft accessory-belt system on specified Volvo Penta TAD5 and TAD7 industrial engines. The approximately 78 x 38 mm roller guides the multi-rib belt, maintains the intended belt path and provides a smooth running surface between the crankshaft-driven fan components.

🚤 Compatibility

Typically suits:

  • Volvo Penta TAD560VE
  • Volvo Penta TAD561VE
  • Volvo Penta TAD765VE
  • Volvo Penta TAD764VE
  • Volvo Penta TAD763VE
  • Volvo Penta TAD762VE
  • Volvo Penta TAD761VE
  • Engine Family: TAD

⚙️ Key Features

  • Genuine Volvo Penta steel idler / deflection roller
  • Approximately 78 mm outside diameter and 38 mm width
  • Used in the crankshaft-driven fan and cooling-belt arrangement
  • Supports correct multi-rib belt tracking and operating tension
  • Direct replacement for the superseded Volvo roller references listed below
  • Engine type: Volvo Penta inline industrial diesel with crankshaft-driven cooling fan

🔌 Function

Guides the fan-drive belt around the accessory system and maintains the correct belt wrap angle. A true-running roller reduces belt vibration, edge loading and premature wear of the fan-drive components.

⚠️ Common Signs of Failure

  • Rumbling, grinding or chirping from the roller bearing
  • Visible wobble or side movement while the engine is running
  • Uneven belt wear, frayed belt edges or repeated belt tracking problems
  • Seized or rough bearing when the roller is rotated by hand
  • Heat discolouration, cracked running surface or looseness at the mounting point

🛠️ Service Notes

  • At approximately 78 mm OD x 38 mm width, this idler is specific to the crankshaft-driven fan-belt system on the TAD560/561VE and TAD761-765VE range - confirm both the dimension and the engine designation before ordering
  • This roller carries the fan-drive belt directly off the crankshaft rather than an accessory tensioner circuit, so check its bearing and running trueness independently of any other belts on the engine

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 21390528 → Supersedes 20759364
  • 20759364 → Earlier Volvo Group reference 85013361

OEM / Related Numbers

  • 20795604 - configuration-specific roller used in related fan assemblies; verify before substitution
  • 21664494 - associated fan console
  • 21500149 - associated belt tensioner
  • 20795655 - associated dust cap
  • 21652835, 21206175, 21685865, 20846320, 20846323 - configuration-specific V-ribbed belts

Aftermarket / Verified Equivalents

  • LASO: 9803 0108

📦 Condition

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

Shipping & Delivery

Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.

Returns & Warranty

14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.

Not sure this fits?

Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.

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