• 21670181 Overflow Valve | Genuine Volvo Penta Part
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21670181 Overflow Valve | Genuine Volvo Penta Part

21670181 Overflow Valve | Genuine Volvo Penta Part

$63.76 AUD
$63.76 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

A genuine calibrated overflow valve used in the low-pressure fuel-regulator assembly on Volvo Penta TAD550GE generator engines. It controls fuel return flow and helps maintain stable supply pressure to the injection system.

🚤 Compatibility

Typically suits:

  • Volvo Penta TAD550GE
  • Volvo Penta TAD551GE
  • Volvo Penta TAD560VE
  • Volvo Penta TAD561VE
  • Volvo Penta TAD734GE
  • Volvo Penta TAD750GE
  • Volvo Penta TAD751GE
  • Volvo Penta TAD752GE
  • Volvo Penta TAD753GE
  • Volvo Penta TAD754GE
  • Volvo Penta TAD765VE
  • Volvo Penta TAD764VE
  • Volvo Penta TAD763VE
  • Volvo Penta TAD762VE
  • Volvo Penta TAD761VE
  • Engine Family: TAD
  • Year Range: Approximately 2008 - 2020

⚙️ Key Features

  • Genuine Volvo Penta calibrated overflow valve
  • Used with fuel regulator 21638691
  • Controls return flow and low-pressure fuel pressure
  • Works with O-rings 21670186 and 21670190
  • Direct replacement for a sticking or leaking valve
  • Engine type: 5.1L inline four-cylinder or 7.15L inline six-cylinder turbocharged generator diesel

🔌 Function

Meters fuel returning from the low-pressure circuit so the injection system receives a stable supply pressure.

⚠️ Common Signs of Failure

  • Low fuel pressure and reduced power
  • Unstable idle or load response
  • Excess return flow
  • Fuel leakage or sticking valve

🛠️ Service Notes

  • Treat it as a sealed, non-adjustable unit — renew it rather than attempting to clean, shim or adjust the internals
  • Work clean: cap the openings, wipe the area down before opening the fuel system, and do not let dirt or fibres into the fuel side while the valve is off
  • Renew the sealing washers, O-rings or gasket that come with the valve, and never reuse a crushed copper or aluminium washer
  • Tighten to the figure in the workshop manual for your engine; these valves screw into fuel housings and heads that strip readily
  • Bleed and prime the fuel system as the manual for your engine describes, then run the engine and check the joint for weeping under working pressure

🔄 Supersession & Cross Reference

OEM / Related Numbers

  • 21638691 - fuel regulator
  • 21670186 - associated O-ring
  • 21670190 - associated O-ring
  • 21738263 - solenoid valve
  • 21738265 - mounting screw

📦 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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