What is the tensile strength of these head bolts?

These Manley Superior Head Bolts have a tensile strength of 180,000 psi. This rating indicates their ability to withstand significant pulling force before breaking.

Do these bolts come with washers?

The bolts are longer than stock and designed for use with washers. Washers are not explicitly listed as included, so you may need to source them separately if you do not already have them.

Are these bolts suitable for high-performance applications?

With their 180,000 psi tensile strength, these bolts offer improved clamping force and durability over stock. They are a solid option for engine builds where reliable cylinder head sealing is important.

1 / 5

Specifications

Brand: Manley Performance
Part #: 42171
UPC: 807298018249

Manley SB Chevy Superior Head Bolts - 1 Set of Bolts for 1 Head

Name: Manley SB Chevy Superior Head Bolts - 1 Set of Bolts for 1 Head
Brand: Manley Performance
SKU: manley-performance-manley-sb-chevy-superior-head-bolts-1-set-of-bolts-for-1-head-t14-172296
Price: 39.42 USD
Availability: BackOrder

$39.42

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley SB Chevy Superior Head Bolts - 1 Set of Bolts for 1 Head. Stronger than stock for reliable cylinder head sealing.

Key Features

Fits Small Block Chevy engines.
180,000 psi tensile strength for improved durability.
Longer than stock bolts, designed for use with washers.
Features a 1/2" hex head for installation.
Set includes bolts for one cylinder head.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

If you're rebuilding the top end of your Small Block Chevy engine, getting the cylinder heads secured properly is critical. These Manley Superior Head Bolts are designed to provide a stronger clamping force than stock bolts, ensuring a reliable seal between your cylinder head and engine block. They are a well-built choice for anyone looking to do the job right.

With a tensile strength of 180,000 psi, these bolts offer improved durability and resistance to stretching under high cylinder pressures. They are also longer than stock bolts, so you'll need to use washers with them to ensure proper load distribution. The 1/2" hex head makes them straightforward to install with the right socket.