Alternator LT1/LTR Replacement
Marine alternator with listed comparison references 807652, 807652T, 3857813, 3860769, AC155616 and ARC60055.
Engine & part-number match
Marine alternator with listed comparison references 807652, 807652T, 3857813, 3860769, AC155616 and ARC60055. Match the installed alternator number, mounting foot, pulley and electrical leads. The LT1/LTR title and MerCruiser references need an exact part check before you order.
Before ordering
- Engine model and serial number; the boat year alone is insufficient.
- Complete number on the existing part and any replacement/supersession reference.
- Pulley, mount, regulator and electrical connections.
Exact replacement needs confirmation. Use the checks above so GT40 can confirm the correct part.
Compare product fitment →Product details
Marine alternator with listed comparison references 807652, 807652T, 3857813, 3860769, AC155616 and ARC60055. Match the installed alternator number, mounting foot, pulley and electrical leads. The LT1/LTR title and MerCruiser references need an exact part check before you order.
Fitment & setup
Which references should I send GT40?
Send the number on your current alternator and photos of the mount, pulley and leads. Comparison references for this listing are 807652, 807652T, 3857813, 3860769, AC155616 and ARC60055.
Will it fit my LT1/LTR engine?
Please have GT40 confirm the exact installed part first. The title names LT1/LTR, while the supplied application information also names MerCruiser; those names alone do not establish the correct replacement.