Here is the main parts list for my OBS
I still have little parts to order for the shower part and bumper attachment.
I will list the rest once I have I figured out. The rest is actually the quick disconnects I plan to add to the rear bumpers for input and output from pump.
Let's just say the brass quick disconnects was not cheap. I wanna say they are mainly for hydraulic use.
The pump recommends using 1/2 hose. The heater hose on the tundra are 5/8. It's actually bigger but 5/8 is the closest size and fits well.
I installed the heat exchanger after the factory heater valve (allows you to adjust temperature via inside the cab via air heat temp knob) inline with the factory heater core. Your factory air heater will still work as normal when shower isn't in use.
I will explain how I did my hose plumbing but you can do yours differently.
Water jug sits on swing out. Hose goes into the jug and runs to the engine where pump is located. The pump sucks water in from jug to water strainer than pushing water into heat exchanger (important that you push water into heat exchanger and not pull water thru heat exchanger so you don't run extremely hot water into pump) and back out to the to the rear of vehicle where I can plug my shower hose and take a shower. Now with a 10 plate heat exchanger. One pass does get water to whatever temp you set the heater control too. Goal is to get to camp, idle engine and hook up two hoses to water jug and recirculate for 5-10 mins depending on desired temp. This way I can shower with warm water and not have an idling engine. My solar set up should keep battery charged while running pump.
Depending on how you want your fittings. I went with barb. I didn't want to mess with threaded pipes and finding correct fittings.
Amazon
SHURFLO 4008-101-E65 3.0 revolution water pump
SHURFLO 255-313-Twist-Pipe-Strainer
SHURFLO 244-3926 elbow adaptor
1/2x50 black heater hose
5/8x1 black heater hose
(2 sets) Precision Brand M6S Micro Seal, Miniature All Stainless Worm Gear Hose Clamp, 5/16" - 7/8" (Pack of 10)
Hilon PVC Reinforced Hose 3/8" ID X 5/8 " OD 25 FT
Delta Faucet 52650-PK Universal Showering Components, 2-Setting Showerhead, Chrome
http://www.dudadiesel.com/heat_exchangers.php
B3-12A 10 Plate Heat Exchanger with M5-.08 Mounting Studs (1/2 barb)
Home Depot
(2) watts brass hose barb (LFA 493) 5/8 in ID x 1/2 in MIP
(2) watts brass hose barb (LFA 390) 1/2 in ID x 1/2 in FIP
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