I replaced an original front hub/bearing on my 97 Bonneville, after 182,000 miles, and it wasn't easy removing its 3 T55 bolts having severe rust around their heads. I finally removed them by using a butane torch, an 8" plumber's wrench (monkey wrench), and a 5 lb hammer to whack the wrench to get the bolts started turning.
Before using the plumber's wrench, I stripped (just a little) one of the 3 T55 bolts holding it to the steering knuckle, and couldn't fully tighten it later.
Does anyone know where I can order these bolts online? I can't seem to find any.
Wanted: New T55 hub/bearing bolts
- harofreak00
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Re: Wanted: New T55 hub/bearing bolts
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Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
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StraTact
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- Year and Trim: 1997 Pontiac Bonneville SE
Re: Wanted: New T55 hub/bearing bolts
Thanks harrofreak00, I appreciate your help!
- - Steven
- - Steven
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StraTact
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- Posts: 104
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- Year and Trim: 1997 Pontiac Bonneville SE
Re: Wanted: New T55 hub/bearing bolts
Thanks but I'd rather get hex bolts (below) at a harware store (price?) or boltdepot.com ($1.32 each) because the old Torx bolts' heads (inside) are nearly worn out due to rust and are very hard to torque to 13 ft-lbs without the Torx bit stripping the inside of the bolt head. I'm assuming that a socket for the new hex bolts will fit through the large hole on the hub/bearing plate.
New Metric hex bolt specs: Class 10.9 steel, 12mm x 1.75mm x 45mm, Max shank length approx 15mm, Zinc plated or Black Oxide finish.
Oh, I'll make sure I use silver anti-seize paste on the bolts to allow for easy removal of the bolts, if necessary.
New Metric hex bolt specs: Class 10.9 steel, 12mm x 1.75mm x 45mm, Max shank length approx 15mm, Zinc plated or Black Oxide finish.
Oh, I'll make sure I use silver anti-seize paste on the bolts to allow for easy removal of the bolts, if necessary.
- harofreak00
- Administrator

- Posts: 26022
- Joined: Mon May 19, 2008 6:04 pm
- Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
- Location: Browerville, MN
- Contact:
Re: Wanted: New T55 hub/bearing bolts
2 years later, you're still working on this?!
I haven't seen the actual application of the 97 style hub, but I'm guessing they use that head style for a reason. A regular bolt head might not clear.
I haven't seen the actual application of the 97 style hub, but I'm guessing they use that head style for a reason. A regular bolt head might not clear.
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Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler

