Description
Pulley Kit for Perkins 4170, 4108 (K6)
AltMount®Serpentine Pulley Conversion Kit for Perkins/Sabre Engines
Perkins/Sabre Engines Covered: 4107, 4108
Kit Includes: Three Six-Groove (K6) Pulleys, Two K6, 40″ Circumference Serpentine Belts (one spare) & Mounting Hardware
Note: If you specify an AT-200A Alternator, a longer belt length may be required.
This product may not be returned to the original point of purchase.Please contact the manufacturer directly with any issues or concerns.

![Balmar Pulley Kit f/Perkins 4170, 4108 (K6) [48-PSP-410-A]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/balmar-pulley-kit-f-perkins-4170-4108-k6-48-psp-410.webp)
![Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount K6 Pulley w/Isolated Ground [621-100-K6]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/balmar-alternator-100-amp-12v-1-2-single-foot-spindle-mount-k6-pulley-w-isolated.webp)
![Balmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley RegulatorTemp Sensor [621-VUP-MC-100-DV]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/balmar-alternator-100-amp-kit-12v-1-2-single-foot-spindle-mount-dual-vee-pulley-.webp)
![Balmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle Pulley w/Isolated Ground [60-100-DV]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/balmar-alternator-100-amp-12v-3-15-dual-foot-saddle-pulley-w-isolated-ground-60-.webp)
![Balmar Alternator 170 AMP 12V 3.15″ Dual Foot Saddle J10 Pulley [XT-CR-170-J10]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/balmar-alternator-170-amp-12v-3-15-dual-foot-saddle-j10-pulley-xt-cr-170-j10.webp)
![Balmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount J10 Pulley RegulatorTemp Sensor [621-VUP-MC-100-J10]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/balmar-alternator-100-amp-kit-12v-1-2-single-foot-spindle-mount-j10-pulley-regul.webp)
![Balmar Offshore Repair Kit AT Series 200AMP 12V Includes Bearings, Brushes, Rectifier [70-AT-200]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/balmar-offshore-repair-kit-at-series-200amp-12v-includes-bearings-brushes-rectif.webp)
![Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle J10 Pulley [XT-DF-250-J10]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/balmar-alternator-250-amp-12v-3-15-dual-foot-saddle-j10-pulley-xt-df-250-j10.webp)
![Balmar Alternator 120 AMP 12V 3.15" Dual Foot Saddle Dual Pulley w/Isolated Ground [60-120-DV]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/balmar-alternator-120-amp-12v-3-15-dual-foot-saddle-dual-pulley-w-isolated-groun.webp)