OER 551448 Coolant Recovery Tank - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**MikeB** · 10-30-2023, 03:09 PM

I'm finishing the installation of an OER 551448 coolant recovery tank in my 69 C10. The tank is made for for 75-79 Nova and other similar GM cars, and it's what a few guys on this forum recommended. The main issue is supporting the bottom of the tank. I ended up using an "L" bracket bolted to the radiator support, with some weatherstripping glued to the top leg.

Had to remove the battery box to get the tank in place. Now I have to remove the radiator to install three body bolts that secure the battery box to the rad support. They were hard to remove, but impossible to install without removing the rad.

Bought some hi-temp 3/8" silicon tubing with 9/16" OD, which looks like it's going to work great. Hope it's OK with antifreeze.

Here's a "work in progress" photo, along with one of the bracket underneath the tank. The tank cap is Dorman 82590.

10-30-2023, 03:09 PM	#1
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,597	OER 551448 Coolant Recovery Tank I'm finishing the installation of an OER 551448 coolant recovery tank in my 69 C10. The tank is made for for 75-79 Nova and other similar GM cars, and it's what a few guys on this forum recommended. The main issue is supporting the bottom of the tank. I ended up using an "L" bracket bolted to the radiator support, with some weatherstripping glued to the top leg. Had to remove the battery box to get the tank in place. Now I have to remove the radiator to install three body bolts that secure the battery box to the rad support. They were hard to remove, but impossible to install without removing the rad. Bought some hi-temp 3/8" silicon tubing with 9/16" OD, which looks like it's going to work great. Hope it's OK with antifreeze. Here's a "work in progress" photo, along with one of the bracket underneath the tank. The tank cap is Dorman 82590. Attached Images __________________ Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! Last edited by MikeB; 10-30-2023 at 06:54 PM.



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