JR Slaten GMC Motorhome Products

7702 Old third St.Road
Louisville,KY 40214

Replacement Stainless Steel Oil Cooler Lines

I offer engine oil cooler lines for both the 455 & 403 cu.in. engines.

The flex lines are made of Weatherhead braided stainless steel hose with Teflon lining and machine crimped fittings. These hoses are rated at 1750 lbs and from -100*F to +450*F. These are manufacturer tested ratings and well above what we need for our coaches.

The 403 hoses are made to the OEM dimensions and are an exact replacement for the originals. The 403 hoses are one piece flex hose from the oil filter adapter to the radiator. I also supply a new stainless steel mounting strap with the hoses to attach the hoses to the frame.

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The 455 hoses are offered as two sets. The first set consists of two flex hoses. The second set is made up of two rigid tubes and fittings. Both sets are exact replacements for the originals.

The 455 flex hoses are cut to the exact length of the originals and are machined crimped. These hoses connect between the rigid tubes and the radiator.

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The 455 rigid tubes are made of 1/2" stainless steel tubing. These tubes are die bent and double flared to be an exact replacement for the original steel tubes. These tubes replace the original steel tubes that have rusted, been twisted off, or just lost over the years. These tubes go between the oil filter adapter and the flex hoses. The tube set consists of two rigid tubes, new fittings to replace the originals, and a new stainless steel mounting bracket.

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I am not in the parts producing business and at the risk of sounding corny, it's just that I like these old coaches and will do whatever I can to keep them running. I price these parts at cost to me and if you can get them cheaper that's great. Whatever you decide, don't settle for a lesser hose.

(Actually I prefer the original 455 set up. The solid steel tubes are as close to bullet proof as you can get.)

ReBuilt PowerLevel Rotary Valves


I offer a replacement for the OEM rotary leveling valves. The originals are made of a pot metal material and have been the source of continuous problems from the very beginning. My valve set consists of two high quality brass valves, a new face plate, and all new quick connect fittings. These valves are rated at zero leakage at 1000 lb.psi. This is a little more than our 125 lb.psi max. These are the best valves I could find at a reasonable cost. This set is an exact replacement for the original and needs no alterations to replace the existing set.

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I think this system is the best of the three air leveling systems that GM offered. The rotary valves are the simplest design, with the least amount of connections, and with the new valves have less chances for leaks.

As always, I want to say that I am not in the parts producing business. I make these parts as a service for my fellow GMCers. At the risk of sounding corny, I'd like to say that I just like these old coaches and will do whatever I can to keep them on the road.

The valve set is also offered with severe weather valves which are rated to -65* F.
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Entry Door Assist Handle

Lights up with a faint, welcome glow.
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Hardwood Adjustable Table

These neat little tables come in either oak or cherry. They're just right to go between the cockpit seats and then move down to between a couple of barrel chairs when parked. They fold up neatly for storage or travel and include a magazine / map rack.