316 Stainless Steel Angled Thru-Hull Exhaust Skin Fitting (VXB 316 Stainless Diesel Heater Exhaust Port). It features a 45-degree or 90-degree curved tail pipe designed to route high-temperature exhaust safely while accommodating tight spacing constraints behind your boat's hull or wall.
Product Overview & Function
• Primary Application: It serves as a secure, insulated hull pass-through specifically for air diesel parking heaters
(e.g., Webasto, Eberspacher, Planar, or Chinese diesel heaters) in marine vessels, RVs, and camper vans.
• The Advantage of an Angled Outlet: The curved lower pipe provides two key functional benefits:
1. Tight Spaces: It allows the rigid, heavy-duty stainless steel flexible exhaust hose to be routed parallel to the hull rather than extending straight inward, saving massive depth clearance behind the wall.
2. Back-Pressure & Flow: It helps angle the external exhaust downward or backward to minimize wind and water forced directly up into the combustion chamber while the boat is in motion.
Thermal Safety: Like the straight version, it uses a double-wall thermal isolation design. The hot core exhaust pipe is decoupled from the outer mounting flangby an air gap, shielding the boat's fiberglass, gelcoat, or woodwork from damaging temperatures.
Specifications
• Tube Diameter: Engineered exactly for standard 24mm (0.94 inch) inner diameter flexible exhaust lines.
• Material: Made entirely from high-grade 316 stainless steel for superior salt-water corrosion protection and heat Scaling resistance.

If you are modifying or updating your routing layout, please tell me:
• Are you mounting this on a vertical hull side or an inclined transom?
• Do you need advice on how to properly set up a condensate drain loop in the exhaust line to prevent water from running back into your heater unit?
Knowing your setup helps me give you the best practical advice for long-term safety.
Haifan Rigging supply a range of marine boat hardwares. They come with a variety of fittings for each end to suit your particular application. Yachts, Sailboats, Ships and Other Fields.
If you wish to ask a question or need further advice, you are welcome to contact us. We'll be happy to help.
We look forward to hearing from you!






