Thread: Radiator Hose Diameter

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  1. #1 Radiator Hose Diameter 
    GTP Level Member 03GPScottyd's Avatar
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    What's the stock radiator hose diameter for a 2003 Grand Prix. Want to install my autometer temp guage but I need a hose adapter for it.

    1 1/2

    1 1/4

    3/4

    5/8

    Sorry for the question but I'm at work and thought I'd order it while I'm here.
    debadged, clear corners, 20% tint, tinted tails, vibrant performance tips, red painted calipers, Fig. grills, autometer guages, PFYC 3 pod A pillar, SLP CAI, 2.5" DP, SD Hood, SD front air damn, Gen I spoiler, 17X8 Borbet Type M rims, engine upgrades soon!
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  2. #2 Re: Radiator Hose Diameter 
    GXP Level Member Zef_66's Avatar
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    Quote Originally Posted by 03GPScottyd View Post
    What's the stock radiator hose diameter for a 2003 Grand Prix. Want to install my autometer temp guage but I need a hose adapter for it.

    1 1/2

    1 1/4

    3/4

    5/8

    Sorry for the question but I'm at work and thought I'd order it while I'm here.
    Either 1.25 or 1.5. Not sure off hand. But I am going to say at least 1.5".
    2001 GSE
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  3. #3 Re: Radiator Hose Diameter 
    I live here. SyntheticShield's Avatar
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    I want to say its 1.25". I can go measure one since I have them off the car if no one else comes up with a definitive answer.
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  4. #4 Re: Radiator Hose Diameter 
    GrandPrix Junkie
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    why put the temp probe in the hose, it's probably the least accurate isn't it?
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  5. #5 Re: Radiator Hose Diameter 
    GTP Level Member 03GPScottyd's Avatar
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    Have the probe and meter but there wasn't a great place to install without tapping into the block. Asked around at ClubGP to see what others have done but no one ever gave me an answer. Even asked where I should tap the probe at but no one really uses the temp meter. Emailed AutoMeter and basically they said that they make the parts, it's up to me to put it where I want it.
    debadged, clear corners, 20% tint, tinted tails, vibrant performance tips, red painted calipers, Fig. grills, autometer guages, PFYC 3 pod A pillar, SLP CAI, 2.5" DP, SD Hood, SD front air damn, Gen I spoiler, 17X8 Borbet Type M rims, engine upgrades soon!
    My Cardomain
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