

Photographed in our warehouse — the part you receive is the part shown.
The B-suffix number for the same interchangeable cooler.
Pricing for this part is being published system by system. Add it to your quote list and we will confirm price, stock and lead time by email, usually within one business day.
Identical to the JD30A unit. Listed separately because customers search both numbers, and a parts counter that only stocks one of them loses the sale.
| Type | Transmission oil cooler |
| Interchange | 21606-JD30A |
| Construction | Stacked plate |
| Mounting | Factory pattern |
It is an aftermarket part engineered to the specification for 21606-JD30B / 21606-JD30A. It is not a genuine OE part and we are not affiliated with the manufacturer. The cross-reference tells you what it replaces.
Match the cross-reference numbers on this page against the number on the part you are removing, or send us your VIN / engine model and we will confirm before dispatch.
24 months against manufacturing defect — material, workmanship and function. Wear items and damage from incorrect installation are excluded. Claims go to a US address, not overseas.