T-SB-0042-23

T-SB-0042-23
July 3, 2023
Understanding Hub Bolts and Hub Nuts
Service
Category
Suspension
Market USA and
Section
Mexico
Tire/Wheel
Applicability
YEAR(S)
MODEL(S)
2023 - 2024
4Runner, 86, Avanza, bZ4X,
Camry, Camry HV, Corolla,
Corolla Cross, Corolla Cross
HV, Corolla Hatchback,
Corolla HV, Crown, GR
Corolla, Grand Highlander,
Grand Highlander HV,
Hiace, Highlander,
Highlander HV, Hilux, Mirai,
Prius, Prius Prime, Raize,
RAV4, RAV4 HV, RAV4
Prime, Sequoia, Sequoia
HV, Sienna HV, Supra,
Tacoma, Tundra, Tundra
HV, Venza HV, Yaris SD
THAI-Prod, Yaris THAI-Prod
ADDITIONAL INFORMATION
Introduction
Some 2023 – 2024 model year Toyota vehicles use hub bolts in place of studs/nuts to fasten the
wheels to the vehicle. If non-compatible wheels or hub bolts/nuts are installed, there is increased
risk that the wheel(s) could come off resulting in a crash. This service bulletin outlines the physical
differences and precautions that should be taken when servicing different wheel and wheel
fastener types.
© 2023 Toyota Motor Sales, USA
Page 1 of 5
T-SB-0042-23
July 3, 2023
Page 2 of 5
Understanding Hub Bolts and Hub Nuts
Introduction (continued)
Figure 1. Hub Nut
Figure 2. Hub Bolt
1
2
1
Stud Bolts
2
Hub Nuts
1
1
Hub Bolts
Table of Contents
•
•
Warranty Information ...............................................................................................................3
•
For USA Market..................................................................................................................3
•
For Mexico Market .............................................................................................................3
Precautions .............................................................................................................................3
•
•
Fastener and Wheel Differences ........................................................................................3
Proper Wheel Alignment ..........................................................................................................5
© 2023 Toyota Motor Sales, USA
T-SB-0042-23
July 3, 2023
Page 3 of 5
Understanding Hub Bolts and Hub Nuts
Warranty Information
For USA Market
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
N/A
Not Applicable to Warranty
–
–
–
–
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
N/A
Not Applicable to Warranty
–
–
–
–
For Mexico Market
Precautions
Fastener and Wheel Differences
1. The genuine hub bolts (Figure 3) have more contacting face (seating face) shapes compared to
the genuine hub nuts (Figure 4) shown below.
Figure 3. Genuine Hub Bolts
1
3
2
1
Spherical Shape (One-piece Bolt)
2
Spherical Shape (Bolt With Washer)
3
Tapered Shape (One-piece Bolt)
4
Tapered Shape (Bolt With Washer)
5
Flat Shape (Bolt With Washer)
4
Figure 4. Genuine Hub Nuts
2
1
1
Flat Shape
2
Tapered Shape
© 2023 Toyota Motor Sales, USA
5
T-SB-0042-23
July 3, 2023
Page 4 of 5
Understanding Hub Bolts and Hub Nuts
Precautions (continued)
Fastener and Wheel Differences (continued)
2. The mating surface of the wheel is designed to accommodate the genuine hub bolt/nut as
shown below.
Figure 5. Genuine Hub Bolts
B
B
B
1
1
A
B
2
A
A
A
Hub
B
Wheel
1
Spherical Shape (Wheel and Bolt)
2
Tapered Shape (Wheel and Bolt)
3
Flat Shape (Wheel and Bolt)
B
3
2
A
A
Figure 6. Genuine Hub Nuts
B
B
1
A
A
1
A
Hub
B
Wheel
1
Flat Shape (Wheel and Nut)
2
Tapered Shape (Wheel and Nut)
CAUTION
• Driving a vehicle with non-compatible wheels or hub bolts/nuts may result in wheel(s)
coming off, which could increase the risk of a vehicle crash.
• While Toyota does NOT recommend replacing the genuine Toyota wheels and hub
bolts/nuts with aftermarket parts, vehicle owners who wish to do so should be advised to
ensure that the wheel and hub bolt/nut they decide to use are compatible with each other
and their vehicle.
• Aftermarket hub bolts/nuts may appear very similar but may not be compatible with
genuine Toyota wheels. Non-genuine parts are NOT covered by Toyota warranty.
• Use ONLY the hub bolts/nuts designed for the wheel used. Genuine Toyota hub bolts/nuts
designed for other wheels/models/model year vehicles may not be compatible.
© 2023 Toyota Motor Sales, USA
T-SB-0042-23
July 3, 2023
Page 5 of 5
Understanding Hub Bolts and Hub Nuts
Proper Wheel Alignment
1. The correct genuine Toyota wheels and hub bolts/nuts should ALWAYS be used together.
2. ANY dirt or foreign matter should ALWAYS be removed from the wheel contact surfaces and
hub bolts/nuts.
3. The specified tightening torque should ALWAYS be used.
NOTICE
The specified tightening torque may differ depending on models or model year types.
ALWAYS consult the repair manual for the proper tightening torque.
4. In the case of hub bolts, proper bolt length
is important for correct wheel installation.
ALWAYS consult the parts catalog when
sourcing genuine Toyota wheels and
hub bolts.
Figure 7.
1
2
NOTICE
Using a bolt that is too short or too long
may prevent the proper tightening torque
from being achieved.
5. When servicing or replacing wheels and/or
hub bolts/nuts, ALWAYS confirm part
compatibility. In the case of hub bolts,
some models use one-piece bolts and
other models use bolts with washers.
1
Wheel
2
Hub Bolt
Figure 8. Bolts With Washers
NOTICE
• Do NOT assume these bolts are
interchangeable, even if the mating
surface shape is the same. Always
consult the parts catalog for correct
hub bolts.
• Inspect the bolts with washers to
ensure that the washer is NOT
damaged and is correctly installed on
the hub bolts.
1
1
© 2023 Toyota Motor Sales, USA
Washer