20412446 Nut | Genuine Volvo Penta Part
20412446 Nut | Genuine Volvo Penta Part
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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
Genuine Volvo Penta nut used to secure the instrument jack housing and sealing ring to the panel.
🚤 Compatibility
Typically suits:
- Volvo Penta TD720GE
- Volvo Penta TD520GE
- Volvo Penta TAD720GE
- Volvo Penta TAD721GE
- Volvo Penta TAD722GE
- Volvo Penta TAD730GE MECH
- Volvo Penta TAD730GE EDC4
- Volvo Penta TAD731GE MECH
- Volvo Penta TAD731GE EDC4
- Volvo Penta TAD732GE EDC4
- Volvo Penta TAD733GE EDC4
- Volvo Penta TAD520GE
- Volvo Penta TAD530GE MECH
- Volvo Penta TAD530GE EDC4
- Volvo Penta TAD531GE MECH
- Volvo Penta TAD531GE EDC4
- Volvo Penta TAD532GE EDC4
- Engine Family: TD, TAD
⚙️ Key Features
- Part of the complete three-jack instrument connection
- Confirmed across D5 and D7 electrical-materials assemblies
- Used with jacks 20405863 and cable 20405780
- Maintains connector alignment and environmental protection
- Exact installation position must match the original panel
- Engine type: Volvo Penta 5- and 7-litre industrial diesel
🔌 Function
Clamps the instrument jack housing and its seal into the panel opening.
⚠️ Common Signs of Failure
- Loose or intermittent instrument connection
- Moisture or corrosion at the jack assembly
- Cracked or distorted mounting component
- Instrument readings dropping out under vibration
- Housing no longer retained or sealed
🛠️ Service Notes
- Fit a new nut wherever the original is a self-locking, nylon-insert or deformed-thread type — the locking feature is single-use and a reused one will not hold
- Clean and inspect the male thread before fitting; run the nut down by hand for most of its travel, and stop and investigate rather than forcing a nut that binds
- Tighten to the figure given in the workshop manual for your engine, using the correct washer and the specified tightening sequence where one applies
- Renew any split pin, tab washer, locking wire or lock washer that goes with the nut, and bend or fit the locking device properly once tightened
- On drive and underwater assemblies, keep dissimilar metals apart where the design intends it and refit any anti-corrosion or anti-seize treatment the manual specifies for that joint
🔄 Supersession & Cross Reference
OEM / Related Numbers
- 20405863 - electrical jacks, quantity three
- 20405780 - cable
- 20405781 - connector
- 20405782 - pin connectors
- 20405783 - terminal gaskets
📦 Condition
- Genuine Volvo Penta part
- Brand new
- Supplied in original or equivalent packaging
Shipping & Delivery
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
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?
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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