Have it fitted at Willys
We fit parts at our Oxley and Warana workshops. Order the part and we'll book you in, or ask for a fitted price first.
Get a fitting quote- Returns within 30 days
- 12 month warranty
- Fitting available
Double Duty Diesel Transmission Clutch & Flywheel Kits
NV4500 / NV5600 Clutch Fork
$126.00
Including GST
or 4 interest-free payments of $31.50 with Afterpay on orders up to $2,000Zip and humm are available over the phone: (07) 5619 7869
Description
The NV4500 / NV5600 Clutch Fork is supplied new and genuine through Willys Workshop.
This clutch fork actuates the release bearing inside the NV4500 and NV5600 transmissions.
Sourced through Willys Workshop’s Double Duty Diesel dealer network. Confirm fitment against your engine and build before ordering – our diesel team can verify the right part. Shipped Australia-wide or fitted in-store at our Oxley (Brisbane) and Warana (Sunshine Coast) workshops.
About Double Duty Diesel
Double Duty Diesel build heavy-duty engine internals and driveline components for Cummins, Duramax and Powerstroke platforms, engineered for towing, performance and competition duty cycles.
Fitment
Confirm your exact vehicle, engine and build date against the part number (CFNV4500/NV4600) before ordering, or contact our team and we will check it for you.
Delivery
Live freight is calculated at checkout on your postcode, or contact us for a freight quote to your address before you order.
Fitting available at Willys Workshop, Oxley (Brisbane) and Warana (Sunshine Coast). Not sure it is the right part for your setup? Get in touch for a quote and fitment check.
Specifications
| Brand | Double Duty Diesel |
|---|---|
| SKU | CFNV4500/NV4600 |
| Shipping weight | 1.5 kg |
| Shipping dimensions | 25 × 20 × 12 cm |
Warranty: 12 months from Willys Workshop
Sold and warranted by Willys Workshop. Parts carry our 12-month warranty against defects, from the date of purchase or installation (whichever is later), subject to any manufacturer terms and fair wear and tear (Terms & Conditions, clause 7.1(b)). This is in addition to your rights under the Australian Consumer Law, which cannot be excluded.
- 30-day change-of-mind returns on eligible items: unused, uninstalled and in the original packaging, with a Return Authorisation from us first. A 15% restocking fee applies and return postage is at your cost.
- Wrong fit: if a part covered by our Fitment Guarantee doesn’t fit, we pay the return freight both ways and there’s no restocking fee.
- Special-order or imported-to-order items, electrical parts, ECUs and tuners once registered, connected or flashed, parts that have been fitted or modified, and clearance items can’t be returned for change of mind. Your rights for faulty goods still apply.
- Refunds are made to your original payment method within 14 business days of us receiving and inspecting the return.
Full details: Returns & Refund Policy and Terms & Conditions.
Warranty claims are coordinated through Willys Workshop. Email sales@willysworkshop.com.au or call Warana (07) 5619 7869 / Oxley (07) 3377 3421 with your order number and a description of the issue.
Shipped Australia-Wide
- Dispatched from within Australia with tracking.
- Same-day dispatch on in-stock orders placed before 11am AEST, Monday–Friday.
- Shipping is calculated at checkout based on size, weight and your delivery address.
- Delivery usually takes 2–10 business days after dispatch, depending on your location.
- Need your tracking number? Once your order has shipped, email sales@willysworkshop.com.au with your order number and we’ll send you the carrier and tracking details.
Freight question? Call us on (07) 5619 7869.
This clutch fork actuates the release bearing inside the NV4500 and NV5600 transmissions.



