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joe0508's avatar
joe0508
Explorer
May 21, 2014

splash guard

I have a 92 p30 motorhome chassis with a 454 tbi engine.I am looking for a P-Series Splash Shield RH 15983041 to protect the manifold from overheating.I have tryed to look this part number up on the gm parts site and it is not recognized.I cant even find it under the name.Does anyone know where i can find it?Their is a different part number in the chassis guide but it is not recognized either.

4 Replies

  • Your best course, IMO, is to contact a GM truck dealer in person and try to obtain the shield. It may be that it is no longer made so your options at that point would be junkyard or making the shield. Any half-way skilled tin bender should be able to make the shield.

    Afaik, GM discovered the problem with airflow and started installing the RH shield in '93. The problem is the channeling of fresh air around the right side of the engine, the lack caused by the adjacent open wheel well. this causes excessive manifold temperatures and failure of spark plug wires.

    I would think that installing more fans by the radiator isn't going to address the problem. That air that is pulled through the radiator would probably follow the flow of air out the wheel well and not offer heat dissipation at the engine's right side.
  • If i cant get the splash shield for the right side manifold would it work just as well to upgrade the fan at the radiator?I was thinking maybe replace the one big fan with two smaller ones.Would this work better than the one big fan, and if so can i get one that will fit with no modifications?Does gm sell an upgraded fan that will match up?

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