• 21735404 Idler Gear | Genuine Volvo Penta Part
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21735404 Idler Gear | Genuine Volvo Penta Part

21735404 Idler Gear | Genuine Volvo Penta Part

$3,485.80 AUD
$3,485.80 AUD
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Shipping calculated at checkout.

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

A genuine Volvo Penta timing-gear idler used in Volvo Penta TAD8 timing-gear and auxiliary-drive systems. It is manufactured to the factory dimensions and operating specification for the catalogued installation.

🚤 Compatibility

Typically suits:

  • Volvo Penta TAD840GE
  • Volvo Penta TAD841-43GE
  • Volvo Penta TAD552VE
  • Volvo Penta TAD853VE
  • Volvo Penta TAD851-53GE
  • Volvo Penta TAD880-82GE
  • Volvo Penta TAD880-84VE
  • Volvo Penta TAD580-83VE
  • Volvo Penta TAD570-72VE
  • Volvo Penta TAD570-71VE-B
  • Volvo Penta TAD550-51VE
  • Volvo Penta TAD540-42VE
  • Volvo Penta TAD840-43VE
  • Volvo Penta TAD850-52VE
  • Volvo Penta TAD870-73VE
  • Volvo Penta TAD840GE-B
  • Volvo Penta TADH880-82GE
  • Volvo Penta TADH880-84VE
  • Engine Family: TAD, TADH
  • HP Range: Approximately 250-400 HP
  • Year Range: Approximately 2010 - 2021

⚙️ Key Features

  • Timing-gear idler for TAD8 timing-gear and auxiliary-drive systems
  • 8.013 kg
  • Listed for 18 applications on TAD and TADH engines
  • Transfers rotation between crankshaft, camshaft and auxiliary gear train

🔌 Function

Transfers rotation between the crankshaft, camshaft and auxiliary gear train while maintaining the required timing relationship.

⚠️ Common Signs of Failure

  • Whine or howl from the timing case that follows engine speed
  • Rattle at idle from excessive backlash
  • Teeth pitted, chipped or worn to a step
  • Idler bearing rough or notchy when turned by hand
  • Metal debris found in the oil or on the filter element

🛠️ Service Notes

  • Renew the idler bearing and inspect the shaft while the timing case is open
  • Check backlash and gear timing marks against specification after fitting

🔄 Supersession & Cross Reference

OEM / Related Numbers

  • 21736271 - idler-gear hub
  • 21735434 - related drive gears
  • 21735437 - related drive gears
  • 21735439 - related drive gears
  • 21860005 - related idler gears
  • 21860001 - related idler gears
  • 21860003 - related idler gears

📦 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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