Subaru Head Bolt Thread Size
The thread size for a Subaru head bolt is M11x1.25mm. This size is commonly used on Subaru cars, and it is important to double-check the head bolt size to ensure it matches the M11x1.25 specification .
If you have any further questions or need additional information, feel free to ask!
Contents
- Does Subaru use metric or standard bolts?
- What is the torque spec for a Subaru 2.5 head bolt?
- Are Subaru lug nuts metric?
- Are Subaru bolts metric or standard?
- What size is the head bolts?
- Do you need to lube head bolts?
- Why can’t i reuse head bolts?
- What size is the head bolt on a EJ20?
- Can you reuse Subaru head bolts?
- What size socket for Subaru head bolts?
Does Subaru use metric or standard bolts?
Does Subaru use metric or standard bolts? Subaru uses a mix of standard and metric bolts when it comes to their lug nuts. Generally speaking, most Subaru models will have either 14mm or 17mm lug nuts.
What is the torque spec for a Subaru 2.5 head bolt?
For example – on the Subaru EJ253 2.5L naturally aspirated engine, a torque specification for a single bolt is to tighten to 22 ft./lbs., then 51 ft./lbs., loosen 180 degrees, then loosen another 180 degrees, torque to 31 ft./lbs., turn an additional 80-90 degrees, all bolts another 40-45 degrees, and finally the …
Are Subaru lug nuts metric?
Subaru uses a mix of standard and metric bolts when it comes to their lug nuts. Generally speaking, most Subaru models will have either 14mm or 17mm lug nuts. Certain Subarus may require an additional adapter to fit the lug nut correctly.
Are Subaru bolts metric or standard?
Yes, almost all Subaru cars use metric bolts.
What size is the head bolts?
Hex Bolt Head Size Chart
| Diameter | Head Size |
|---|---|
| 5/8″ | 15/16″ |
| 3/4″ | 1 1/8″ |
| 7/8″ | 1 5/16″ |
| 1″ | 1 1/2″ |
Do you need to lube head bolts?
Absolutely. Metal to metal friction is notoriously variable. If you rely on dry friction you have no real idea how much torque has been applied to the bolt.
Why can’t i reuse head bolts?
If a head bolt is rusted it should not be reused. A head bolt should not be reused if the threads are galled or badly damaged. Chasing damaged head bolt threads with a die will clean up the threads but also remove material (metal) and undermine the head bolt’s ability to torque down and hold to specs.
What size is the head bolt on a EJ20?
RCM 14/12mm Superstud Cylinder Head Stud Kit – Subaru WRX/STI/FXT/LGT (EJ20/EJ25)
Can you reuse Subaru head bolts?
There are differences between a standard bolt and a torque to yield or stretch bolt.
What size socket for Subaru head bolts?
14mm x 12 pt
Services 1999-2020 Subaru Baja, Forester, Impreza, Legacy, Outback and Saab 9-2X Aero. The overall length (63.60mm or 2 1/2”) is optimized to clear valve train components, maximizing work space between the cylinder head and frame. Socket size: 14mm x 12 pt.
