MEC 130-7489-02CN Aftermarket Onan MDKD/MDKB Heat Exchanger | Sawley's Select Marine Parts

Name: MEC 130-7489-02CN Aftermarket Onan MDKD/MDKB Heat Exchanger | Sawley's Select Marine Parts
Brand: Sawley's Select Marine Parts
SKU: 933057N
Price: 960.00 AUD
Availability: InStock

$960.00 AUD

Sale Sold out

Shipping calculated at checkout.

✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide

🔧 Product Description

Aftermarket Onan MDKD/MDKB Heat Exchanger - Replacement Part Number: MEC 130-7489-02CN

Complete heat exchanger for Cummins Onan MDKD and MDKB marine diesel generator sets.

⚙️ Key Features

• Marine-grade shell-and-tube heat exchanger

• Designed as a direct replacement for the listed reference numbers

• Helps maintain stable operating temperature under sustained marine load

• Marine connection sizes and mounting points must match the original assembly

• Suitable for professional marine cooling-system service and replacement

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 130-7489-02CN → Replaces 130-7489-02 and 130-7489-03

OEM / Related Numbers:

• 130-7489-02CN

• 130-7489-02

• 130-7489-03

• 130-5176 cap kit

Aftermarket / Verified Equivalents:

• Mr Cool: MRC130-7489-02CN

• Seakamp: 130-7489-02CN

• Lenco: LE-130-7489

Included Components:

• Heat exchanger - Part Number: 130-7489-02CN

• End cover - Part Number: 130-5169

• End-cover O-ring - Part Number: 509-0351

• End-cover gasket - Part Number: 130-5170

• End-cover bolt - Part Number: 800-0317

• Sacrificial zinc - Part Number: 130-4434 / 9-125

• Grounding stud - supplied with exchanger

🚤 Compatibility

Commonly used on:

• Marine-grade shell-and-tube heat exchanger systems

Typically suits:

• Engine models:

• Onan MDKDK/MDKDL/MDKDM/MDKDN

• MDKBK/MDKBL/MDKBM/MDKBR/MDKBS/MDKBT/MDKBU Spec D-G

• Bundle Diameter: approximately 2 in

• Bundle Length: approximately 10 in

• Construction: copper-nickel

🔌 Function

The heat exchanger keeps closed-loop coolant separate from seawater while transferring heat through the tube stack.

Common signs of failure:

• Engine or generator temperature rises above normal under load

• Coolant loss or seawater leakage around the exchanger

• Restricted seawater flow from scale, debris or damaged tubes

• Coolant contamination caused by an internal tube failure

• Corroded end covers, tube stack or sacrificial anode

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective 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.