PDI | Big Boss CAT 3406E/C15/C16 Exhaust Manifold
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Available for: Caterpillar 1994-2004 3406E, C15, C16 Engines Key Benefits 20% increase in airflow over stock 75-100 degree cooling of EGTs High Silicon with Molybdenum Ductile Iron (HSMD) that eliminates weak points such as warping,…
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This part is priced on request. Call or text us and we’ll give you a price and lead time.
Fast AU-Wide Shipping
Returns within 30 days
12 month warranty
Will it fit your vehicle?
| Make | Model | Series | Years | Engine | Notes |
|---|---|---|---|---|---|
| — | — | — | 1994 – 2004 | CAT 3406E | serial prefixes 5EK 6TS 1LW 1MM 6NZ 7CZ MBN |
| — | — | — | 1994 – 2004 | CAT C15 | serial prefixes 5EK 6TS 1LW 1MM 6NZ 7CZ MBN |
| — | — | — | 1994 – 2004 | CAT C16 | serial prefixes 5EK 6TS 1LW 1MM 6NZ 7CZ MBN |
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 CAT 3406E/C15/C16 Exhaust Manifold
Please contact us for product pricing.
Available for: Caterpillar 1994-2004 3406E, C15, C16 Engines
Key Benefits
- 20% increase in airflow over stock
- 75-100 degree cooling of EGTs
- High Silicon with Molybdenum Ductile Iron (HSMD) that eliminates weak points such as warping, cracking, and center divider failure from heat erosion. This material, combined with a redesign of the mounting surfaces, eliminates common failures due to a fatigued manifold.
PDI exhaust manifolds have been designed to maximize the exhaust air flow to reduce turbo lag time and cool exhaust temperatures. In the design of the manifold each port is analyzed and tested to provide a balanced flow to the turbocharger. Big Boss Exhaust Manifolds produce, on average, a 20% air flow increase over a stock manifold, cooling exhaust temperatures by 75-100 degrees. PDI manifolds are a big part in maintaining the best exhaust pressure to boost pressure ratios which will provide potential for increased fuel economy.
A simple upgrade for your CAT engine! Fits most engines with serial number prefixes 5EK, 6TS, 1LW, 1MM, 6NZ, 7CZ, and MBN.
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.
PDI | Big Boss CAT 3406E/C15/C16 Exhaust Manifold Please contact us for product pricing.
Additional information
| Weight | 14 kg |
|---|---|
| Dimensions | N/A |
| Coating | Polished Ceramic, Black Ceramic, Non-Coated |
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.
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