PDI | Big Boss Intake Manifold Cummins X15 | ISX15 2013.5-2024
Price range: $3,780.00 through $5,754.00
Zip and humm are available over the phone: (07) 5619 7869
By opening up the manifold in key areas airflow will increase up to 35% leading to lower air intake temperatures resulting in power gains of up to 20hp.
Fast AU-Wide Shipping
Special order – no change-of-mind returns
12 month warranty
Will it fit your vehicle?
| Make | Model | Series | Years | Engine | Notes |
|---|---|---|---|---|---|
| — | — | — | Jul 2013 – 2024 | ISX | ISX15 |
| — | — | — | Jul 2013 – 2024 | X15 |
Fitment listings are a guide. Not sure? Send us your rego or VIN and our team will check the part for your vehicle, before or after you order.
Description
PDI | Big Boss Intake Manifold Cummins X15 | ISX15 2013.5-2024
Available for: 2013.5 – 2024 Cummins ISX15 & X15 Engines
Warranty: 1 Year Unlimited Mile Warranty
PDI Big Boss Intake manifolds are built to increase and balance the air going into the engine.
By opening up the manifold in key areas airflow will increase up to 35% leading to lower air intake temperatures resulting in power gains of up to 20hp.
These direct replacement manifolds are simple to install and utilise factory hardware.
Like all PDI products, the Big Boss intake manifolds will increase horsepower and efficiency to make your drive more enjoyable and save you money.
| OEM Reference Part Number | 5440760, 3688355 |
Shipped Australia-Wide
- Ships direct from our supplier in NSW with tracking.
- Road freight is calculated at checkout for your 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.
PDI | Big Boss Intake Manifold Cummins X15 | ISX15 2013.5-2024 Available for: 2013.5 – 2024 Cummins ISX15 & X15 Engines Warranty: 1 Year Unlimited Mile Warranty PDI Big Boss Intake manifolds are built to increase and balance the air going into the engine.
Additional information
| Weight | 25 kg |
|---|---|
| Dimensions | 100 × 40 × 35 cm |
| Colour | Red Ceramic, Chrome |
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.







