Dynojet AutoTune module for use with compatible Power Commander V Harley-Davidson tuning systems. The wiring appears to have been handled or connected, so this is being listed as open box / used.
Part Number / Markings: 66391208 marking / reference
Condition: Open Box / Used – Verify Contents
DETAILS: Dynojet AutoTune systems monitor air/fuel ratio and work with compatible Power Commander systems to make fuel-trim corrections. Review the photos closely for the exact module, wiring, connectors, sensors, and accessories included.
USED PARTS DISCLAIMER: This is a used motorcycle part and may show normal signs of age, installation, removal, storage, and previous use, including scratches, scuffs, discoloration, surface corrosion, paint or chrome wear, oxidation, or other cosmetic imperfections. Any known damage or defects are noted when known. Unless otherwise stated, the photos show the actual item being sold and are considered part of the description.
FITMENT NOTES: Dynojet produced different AutoTune versions for Harley J1850, CAN, single-channel, and dual-channel applications. The supplied 66391208 reference does not by itself confirm the exact AT-100 / AT-101 / AT-200 configuration, so match connectors and module markings before purchase.
FITMENT: Buyer is responsible for verifying fitment before purchase. Fitment information is provided as a reference based on available part numbers, markings, dimensions, and published references. Motorcycles may have been modified over time, so compare the part number, mounting points, wiring, dimensions, finish, and photos with the part currently on your motorcycle.
QUESTIONS? Send us a message before purchasing if you need additional measurements, photos, condition details, or clarification on what is included.
SHIPPING: Orders are typically processed and shipped within 1–2 business days after payment. Tracking is provided once the order ships. Parts are packed according to their size, weight, and type.