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Thread: Water pump pulley bolts

  1. #1

    Dr_Snooz's Avatar
    Join Date
    Jun 2007
    1989 Accord LX-i
    Fresno, California

    Water pump pulley bolts

    I don't know if this will help anyone else, but I just spent a couple weeks without the Red Car because of this. I lost one of my water pump pulley bolts recently. There was nothing in the junkyard so I had to figure out the size to buy something. The bolts have a 10mm head, but are not the standard 10mm size that Honda uses so frequently. On p. 10-7 of the manual, it lists a size of 6x1.0, but this is wrong. They are fatter and very short. If you get them too long, they will hit the water pump housing and make a mess. They are also a flange bolt (they have an integrated washer in the head). The actual size is M7x1.0x10mm. So, M7 is the shaft diameter; 1.0 is the thread pitch; and 10mm is the length. M7 bolts are hard to find and flanged M7 bolts are impossible. You can find M6 and M8 all day long, but not M7. I was not able to find anything anywhere online: not Amazon, not eBay, not even McMaster-Carr. I ended up going to Home Depot and buying a standard M7 bolt with separate washers. My HD had them in stock. It just took me 2 weeks of searching to find them.

    Hope this saves someone else a big headache.

    "I like to take hammers, and just break stuff, just break stuff." - Beavis

    1989 Honda Accord LX-i Coupe, 220k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

  2. #2
    LXi User InAccordance's Avatar
    Join Date
    Jun 2010
    1989 Accord LX Sedan / 2000 Accord EX v6

    Re: Water pump pulley bolts

    I dropped one of those changing the pump a while back and about panicked because of this. Rare bolts just like the one that hold the ignition switch in place. Still haven't found any of those..
    Originally posted by ShiRen:
    Nice car or not, nobody likes losing a race to an old 4 door Honda.

  3. #3
    LX User AWH's Avatar
    Join Date
    Feb 2017
    Honda Prelude BA2 1987 2.0-16V. B20A1
    the Netherlands

    Re: Water pump pulley bolts

    I understand you got your Accord running again after a good while of not having it driving at all If so,happy to hear so. A moderator without a running car seems a bit weird.
    Wanted to ask if you are on any of the FB groups,and what username you have on there. Just to know which is you,because I follow for a while now,and might have been talking to you already without even realising.
    Stay healthy in these strange days.

    Verstuurd vanaf mijn E5823 met Tapatalk

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