• 20478064 Hollow Screw | Genuine Volvo Penta Part
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20478064 Hollow Screw | Genuine Volvo Penta Part

20478064 Hollow Screw | Genuine Volvo Penta Part

$22.84 AUD
$22.84 AUD
Sale Sold out
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

OEM fastening component used in the low-pressure fuel supply, return and injection-pump connection system. It restores the specified thread, length, strength and clamping arrangement required by the original Volvo Penta assembly.

🚤 Compatibility

Typically suits:

  • Volvo Penta D12D-A MG
  • Volvo Penta D12D-E MG
  • Volvo Penta D12D-E MP
  • Volvo Penta D12D-F MP
  • Volvo Penta D12D-H MP
  • Volvo Penta TWD1240VE
  • Volvo Penta TAD1241GE
  • Volvo Penta TAD1242GE
  • Volvo Penta TAD1250VE
  • Volvo Penta TAD1251VE
  • Volvo Penta TAD1252VE
  • Volvo Penta TAD1250-52VE
  • Volvo Penta TAD1240GE
  • Volvo Penta TAD1241VE
  • Volvo Penta TAD1242VE
  • Volvo Penta TAD1241-42VE
  • Engine Family: D, TWD, TAD
  • HP Range: Approximately 300 HP
  • Year Range: Approximately late 1990s-2010s, depending on engine and installation

⚙️ Key Features

  • 0.059 kg
  • Supersedes 20397814
  • For the low-pressure fuel supply, return and injection-pump connection system
  • Listed for 16 applications across D, TWD and TAD series engines

🔌 Function

Acts as a union bolt in the low-pressure fuel system, clamping a pipe eye to its port while passing fuel through its central drilling.

⚠️ Common Signs of Failure

  • Fuel weeping from under the pipe eye or around the head
  • Diesel smell and a damp, dirt-collecting patch at the joint
  • Air drawn into the fuel system, causing hunting or hard starting
  • Central drilling found blocked with debris
  • Sealing washers found flattened and hard, and the head found rounded on removal

🛠️ Service Notes

  • Always fit new sealing washers each side of the pipe eye - the washers, not the screw, are usually why the joint weeps
  • Check the central drilling is clear before refitting, and do not over-tighten; a stretched hollow screw will snap in service
  • It replaces 20397814, so the two numbers describe the same hollow screw

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 20478064 → Supersedes 20397814

OEM / Related Numbers

  • 20397814 earlier number superseded by this part

Aftermarket / Verified Equivalents

  • ATP: HS-064

📦 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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