Here's why:
* Multiple Transmission Options: As you mentioned, the 1987 Trooper had several different transmission options, each with its own unique part number. These could be:
* Manual Transmissions:
* 4-speed (likely with the 2.3L engine)
* 5-speed
* Automatic Transmissions:
* 3-speed
* 4-speed
* Model Variation: The Trooper model year might also affect the transmission used.
* Engine Size: While you mentioned the 2.3L gas engine, it's crucial to know if it's the 2.3L 4ZE1 or 2.3L 4XC1 engine, as these might have slight differences in transmission compatibility.
How to Find the Correct Part Number:
1. Identify Your Transmission: Look for a tag or sticker on the transmission housing. This usually has the transmission model number (like a 4L30E for a 4-speed automatic).
2. Consult a Parts Catalog: Use a reliable online parts catalog (like a dealership's parts website or a reputable aftermarket parts provider) and enter your vehicle's year, make, model, and engine size. Then, search for "transmission."
3. Contact an Isuzu Dealer: A local Isuzu dealership can help you identify the correct transmission based on your vehicle's VIN number.
Once you know the exact transmission model, finding the correct part number will be much easier.
