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04-19-2020, 01:44 PM
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#1 |
  Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 807
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LT4 Cooling Brick O-Ring Part Number?
Greetings - My LT4 sprang a leak - traced to the driverside cooling brick (water manifold) o-ring.
Does anyone know the GM part number for the gasket? It helps immensely when I call stateside with a part number and only have to wait 2.5 weeks vice 5 for a reorder. Many thanks!  
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04-19-2020, 03:11 PM
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#2 |
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2019 ZL1 1LE MY GOON
Drives: 1980 Z28 Big Red. Join Date: Dec 2018
Location: Stoney Creek
Posts: 2,061
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Should be able to match it up with a simple o-ring from a hardware store.
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04-20-2020, 06:21 AM
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#3 |
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Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 807
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ScottyZ: that is an option, but prefer the OEM part (blue in color too!)
Heater: I'm not out of the woods...it wouldn't start and noticed the supercharger coolant was empty after a short drive. Anyone have a part number? Thanks.
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04-20-2020, 02:40 PM
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#4 |
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Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 807
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Heater: Appreciate the offer...I've got a friend at a dealer, but I try to back him up on these long distance purchases.
Confident the o-ring is OEM #12608997. It is also used on the LSA motor - I was thinking it might be similar. Car was missing at idle on #1...makes sense now - idle under vacuum so it was pulling the supercharger coolant in. WOT - no issues except the IAT went 160+ at the end due to low fluid/pump off. Nonetheless, at least 2 weeks thanks to the strike/virus as he didn't have it in stock. Oil change: I was concerned about that as well...fortunately, I'm ready for that. I did get the car up and running temporarily...to check for terminal failure - idled/drove fine on a short jaunt. Crossing fingers... Thanks! Upper hole shows the o-ring witness marks of install failure: 
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05-02-2020, 03:53 PM
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#5 |
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Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 807
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Happy Friday due to o-ring arrival via USPS!
 Saturday morning - off the blower came...correctly lubricated o-ring installed and reassemble. How we do it in Germany...with no one to assist:  Quick test drive returned full power and cool IAT's.
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