ARP L15B7 Headstud Kit 16-21 Honda Civic 1.5T / 17-21 Civic Si

$399.00
$339.49

GUARANTEED
TO FIT YOUR CAR

SHIPS OUT
SAME DAY

100% CUSTOMER
SATISFACTION

GUARANTEED
TO FIT YOUR CAR

SHIPS OUT
SAME DAY

100% CUSTOMER
SATISFACTION

Availability: 43 In Stock
Sku: ACR-HON-L15HSK
ARP Fasteners

Throughout our extensive experience in engineering high-performance, low-displacement 4-cylinder engines, we've consistently recognized the critical importance of maintaining robust head-to-block sealing. For this purpose, ARP head studs stand unmatched. Currently, there isn't a ready-made kit for the L15B7 engine, but by integrating select ARP components with custom-designed spacers, we've developed a solution that meets both our requirements and those of others.

ARP selects top-grade 8740 alloy for their studs, which undergoes a rigorous heat treatment process to reach a tensile strength of 200,000 psi, ensuring thorough heat penetration and a quality far surpassing that of inferior studs found in the market, which are often processed inadequately.

After heat treatment, ARP takes the additional step of centerless grinding each stud to achieve unparalleled concentricity. This meticulous process, involving around ten fine adjustments, yields a product of exceptional straightness.

Moreover, ARP's method of thread rolling the studs post-heat treatment significantly enhances their fatigue strength by approximately 1000% compared to those threaded before heat treatment, a prevalent but inferior industry method. Despite the higher cost due to the wear on tools, this process is a testament to ARP's commitment to excellence.

Key Features:
- ARP head studs for unmatched reliability.
- Made from 8740 chromoly steel with 12-point nuts for superior strength.
- Includes a correctly sized spacer to ensure accurate torque application of the head studs.

Benefits:
- Provides a higher clamping force to maintain seal integrity.
- Offers enhanced resistance to head lifting in high-boost scenarios, ensuring engine durability and performance.

Applications:

  • 2016 - 2021 Honda Civic 1.5T
  • 2017 - 2021 Honda Civic Si

What's In The Box?

  • 10 - ARP Headstuds
  • 10 - ARP Nuts
  • 10 - MAPerformance L15B7 Headstud Spacers
  • 1 - ARP Assembly Lube

Throughout our extensive experience in engineering high-performance, low-displacement 4-cylinder engines, we've consistently recognized the critical importance of maintaining robust head-to-block sealing. For this purpose, ARP head studs stand unmatched. Currently, there isn't a ready-made kit for the L15B7 engine, but by integrating select ARP components with custom-designed spacers, we've developed a solution that meets both our requirements and those of others.

ARP selects top-grade 8740 alloy for their studs, which undergoes a rigorous heat treatment process to reach a tensile strength of 200,000 psi, ensuring thorough heat penetration and a quality far surpassing that of inferior studs found in the market, which are often processed inadequately.

After heat treatment, ARP takes the additional step of centerless grinding each stud to achieve unparalleled concentricity. This meticulous process, involving around ten fine adjustments, yields a product of exceptional straightness.

Moreover, ARP's method of thread rolling the studs post-heat treatment significantly enhances their fatigue strength by approximately 1000% compared to those threaded before heat treatment, a prevalent but inferior industry method. Despite the higher cost due to the wear on tools, this process is a testament to ARP's commitment to excellence.

Key Features:
- ARP head studs for unmatched reliability.
- Made from 8740 chromoly steel with 12-point nuts for superior strength.
- Includes a correctly sized spacer to ensure accurate torque application of the head studs.

Benefits:
- Provides a higher clamping force to maintain seal integrity.
- Offers enhanced resistance to head lifting in high-boost scenarios, ensuring engine durability and performance.

Applications:

  • 2016 - 2021 Honda Civic 1.5T
  • 2017 - 2021 Honda Civic Si

What's In The Box?

  • 10 - ARP Headstuds
  • 10 - ARP Nuts
  • 10 - MAPerformance L15B7 Headstud Spacers
  • 1 - ARP Assembly Lube

Frequently Asked Questions

Are ACT clutches balanced?

Yes! All ACT clutch assemblies are computer spin balanced to within .25 oz-in to guarantee help smooth operation across the entire RPM range. For comparison, stock production clutches are typically balanced to within .50 oz-in. Lower is definitely better!

Will an ACT clutch increase pedal effort?

ACT pressure plates are specifically designed to handle high torque applications. With ACT's durable design, expect an increase in pedal effort between 15-40% (Heavy Duty) and 50-80% (Xtreme), depending on the application. Clutches developed with less pedal effort often result in a lack of longevity, torque capacity and/or engagement quality.

Do ACT clutches require a break-in period?

For organic street discs, we recommend breaking in the clutch for 300-500 miles with mild engagement, such as stop-and-go city driving prior to racing or spirited driving. ACT race discs usually only require a few hard slips to lap in the surfaces prior to normal driving or racing. Do not overheat the clutch during the break-in period, as this can result in friction surfaces fusing together, hot spots, and friction surface glazing.

Are ACT clutches repairable or rebuildable?

In some situations, rebuilds or repairs may be possible (see warranty), after inspection of the clutch assembly. Please contact our technical department for further information. Because of special modifications, we do not recommend servicing by a general clutch rebuilder.

How much does an ACT clutch weigh?

The weight of the ACT clutch assembly will usually be the same as a stock OEM clutch assembly.

Frequently Asked Questions

Are ACT clutches balanced?

Yes! All ACT clutch assemblies are computer spin balanced to within .25 oz-in to guarantee help smooth operation across the entire RPM range. For comparison, stock production clutches are typically balanced to within .50 oz-in. Lower is definitely better!

Will an ACT clutch increase pedal effort?

ACT pressure plates are specifically designed to handle high torque applications. With ACT's durable design, expect an increase in pedal effort between 15-40% (Heavy Duty) and 50-80% (Xtreme), depending on the application. Clutches developed with less pedal effort often result in a lack of longevity, torque capacity and/or engagement quality.

Do ACT clutches require a break-in period?

For organic street discs, we recommend breaking in the clutch for 300-500 miles with mild engagement, such as stop-and-go city driving prior to racing or spirited driving. ACT race discs usually only require a few hard slips to lap in the surfaces prior to normal driving or racing. Do not overheat the clutch during the break-in period, as this can result in friction surfaces fusing together, hot spots, and friction surface glazing.

Are ACT clutches repairable or rebuildable?

In some situations, rebuilds or repairs may be possible (see warranty), after inspection of the clutch assembly. Please contact our technical department for further information. Because of special modifications, we do not recommend servicing by a general clutch rebuilder.

How much does an ACT clutch weigh?

The weight of the ACT clutch assembly will usually be the same as a stock OEM clutch assembly.

Free Shipping for the Contiguous Continental States excluding Alaska.

We use UPS, FedEx, and USPS for deliveries. We are not responsible for any shipping problems and shall not be held liable for any "reasonable" delay beyond our advertised delivery time-frames. Shipment by Ground Courier can take up to 6 business days for delivery or Express Courier which can take up to 3 business days for delivery. Shipping time frames are once the order has been processed. Due to high demand, order processing can take 1 to 2 business days.

The on-time delivery guarantee does not apply to shipments that are delayed due to causes beyond the couriers control, including, but not limited to, the following: the unavailability or refusal of a person to accept delivery of the shipment, delays caused by the consignee, acts of God, public authorities acting with actual or apparent authority on the premises, acts or omissions of Customs or similar authorities, riots, circumstances arising before, during, or after a strike or other labor disputes, civil commotions, disruptions in the air or ground transportation network (such as weather phenomena), and natural disasters. For more information on the shipping Limits and Restrictions visit the UPS website at http://www.ups.com.

We do not accept Collect shipments for on-line orders. All shipping charges are charged at the time the order is placed on-line.

Any order received after 3PM PST will not ship until the following business day.

Free Shipping for the Contiguous Continental States excluding Alaska.

We use UPS, FedEx, and USPS for deliveries. We are not responsible for any shipping problems and shall not be held liable for any "reasonable" delay beyond our advertised delivery time-frames. Shipment by Ground Courier can take up to 6 business days for delivery or Express Courier which can take up to 3 business days for delivery. Shipping time frames are once the order has been processed. Due to high demand, order processing can take 1 to 2 business days.

The on-time delivery guarantee does not apply to shipments that are delayed due to causes beyond the couriers control, including, but not limited to, the following: the unavailability or refusal of a person to accept delivery of the shipment, delays caused by the consignee, acts of God, public authorities acting with actual or apparent authority on the premises, acts or omissions of Customs or similar authorities, riots, circumstances arising before, during, or after a strike or other labor disputes, civil commotions, disruptions in the air or ground transportation network (such as weather phenomena), and natural disasters. For more information on the shipping Limits and Restrictions visit the UPS website at http://www.ups.com.

We do not accept Collect shipments for on-line orders. All shipping charges are charged at the time the order is placed on-line.

Any order received after 3PM PST will not ship until the following business day.

PROP 65 WARNING: This product can expose you to chemicals including carbon black, glass wool fibers, and silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

PROP 65 WARNING: This product can expose you to chemicals including carbon black, glass wool fibers, and silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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