These Altmount Kits by Balmar offer the opportunity to install a larger alternator than would otherwise be possible. They are designed to fit select engine models, the list expands every day so if you don't see your engine listed do give us a call. This kit 48-FSP-M4.17 is for the Vetus M4.17 Marine Diesel. Alternator upgrades using a single drive belt are limited by the amount of power that can be transferred by the belt but using a serpentine belt considerably increases the possibilities. The kits include a set of serpentine pulleys to go over the crankshaft and water pump pulley and replace the alternator pulleys and come with a matching serpentine belt. They are sold for specific engine models only. The alternators need to be purchased separately. If you order an alternator with a kit it will come with the appropriate pulley pre-installed. Installation is relatively easy. The kit comes with two belts but purchasing an additional spare belt is recommended as these are not typical serpentine belts.
The photo shown is of a the actual kit, I'm sorry but I do not have a photo of it installed.
Read my BLOG POST about installing one of these kits.
My blog post has installation notes for a different serpentine kit
Please mention the kit number and your engine model number in the order notes at checkout. Thank you for your order.