• 21670186 O-Ring | Genuine Volvo Penta Part
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21670186 O-Ring | Genuine Volvo Penta Part

21670186 O-Ring | Genuine Volvo Penta Part

$3.49 AUD
$3.49 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 elastomer O-ring used in the TAD550GE fuel-regulator and overflow-valve assembly. O-ring 21670186 has a position-specific diameter and cross-section and must not be substituted with the adjacent seal.

🚤 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 fuel-system O-ring
  • Position-specific size and material
  • Compatible with diesel fuel
  • Maintains regulator and valve sealing
  • Engine type: 5.1L inline four-cylinder or 7.15L inline six-cylinder turbocharged generator diesel

🔌 Function

Seals the specified fuel-regulator or overflow-valve joint and prevents fuel leakage or air entry.

⚠️ Common Signs of Failure

  • Diesel seepage
  • Air entering the fuel circuit
  • Flattening, cuts or swelling
  • Recurring leakage from a damaged groove

🛠️ Service Notes

  • Always fit a new O-ring — never refit one that has been removed, as it has already taken a set in its groove
  • Clean the groove and both sealing faces and check them for nicks, scoring and corrosion pitting; a damaged groove will leak however good the new seal is
  • Smear the ring with a little clean lubricant compatible with the fluid it seals, then roll it into place by hand so it sits untwisted and fully in its groove
  • Never lever an O-ring over a sharp edge or thread with a screwdriver; use a blunt plastic tool and protect any edge the ring has to pass
  • Assemble the joint squarely and tighten to the figure and sequence given in the workshop manual for your engine — over-tightening extrudes the ring and causes the very leak you were curing

🔄 Supersession & Cross Reference

OEM / Related Numbers

  • 21638691 - fuel regulator
  • 21670181 - overflow valve
  • 21670190 - associated O-ring
  • 21738263 - solenoid valve

📦 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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