Water Cooled Billet Aluminum Top Cap

*NOTE: We are currently out of stock.  There is no anticipated time frame on when a new batch will be made, due to workload capacity.  Please check back on the site for updates.  Sorry for the inconvenience.

Purpose: To create a stronger top cap and a drive shower combined into one product.

  1. Strength and Durability:  Our top cap is machined from a billet of 6061 aluminum instead of a casting; we also added material in critical areas for added strength. The added strength will help stabilize the upper gear housing, providing longer gear life.
  2. Cooling:  On our 382 Fastech Formula with original top caps and no drive showers, I noticed that the drives were chalking the paint and burning the lube with only 109 original hours on the boat. Instead of purchasing a separate ‘drive shower’, I decided to take it to the next level and design a top cap that was water cooled. The ten water passages in the cap provide cooling directly to the upper bearing and gear assembly.  As the water exists through the cap, it showers the side of the drive.  This provides additional cooling, helping to prevent the gear lube from burning.
  3. Hard Coat Anodized: To prevent corrosion and to provide a durable finish.
  4. Slotted counter bores: To drain the water away from the bolt heads to prevent corrosion.
This is a quick video of the product in action;


Facts about the Wags Engineering Water Cooled Billet Aluminum Top Cap;

  • Fits Bravo’s I, II, III . X, XR, and XZ.
  • Reduces Drive Temperature preventing burnt gear lube.
  • Hard Coat Anodized – black to prevent corrosion
  • High Strength Billet 6061 – T6 Aluminum.This replaces the original cast aluminum part.
  • 1.1” thick under bolt heads for added strength.
  • Slotted counter bores to prevent corrosion around bolts.
  • Fully CNC machined
  • Made in USA

Cost of Kit $399 + Shipping $15.00 for each top cap.  The kit includes;

  • One (1) Hard Coat Anodize Top Cap
  • ARP Stainless Bolts
  • Bearings installed
  • Stainless Steel Water Hose with Pick-up and Fittings
  • O- Rings

Before placing you order, contact Jeff at 440-350-4749 or jeff@wagsengineering.com to discuss the right combination needed for your top cap.  We offer various options depending on the style of your top cap.