ARP 2016-2021 Honda Civic 1.5T Head Stud Kit

Fits all 2016-2021 Honda Civic 1.5T

Fits all 2022+ Honda Civic 1.5T

Fits all 2017-2022 Honda CR-V 1.5T

Fits all 2018+ Honda Accord 1.5T

Fits all 2023+ Acura Integra 1.5T

Fits all variant models including Si, CVT, 6MT, RHD, International Models, Etc.

Overview

After years of waiting, a proper head stud kit is now available for the L15 1.5L turbocharged engine found in many 2016+ Honda vehicles. No more stacked washers, no more giant spacers.

TSP's 1.5T Head Stud Kit was custom manufactured by ARP and is a TSP exclusive product. The head studs are made from ARP2000 and are the only proper length stud available for this engine. Each kit includes a set of ARP nuts and washers as well as a packet of ARP assembly lubricant — everything you need for a complete installation.

Availability

This item is currently on backorder. We are actively working to fulfill orders as inventory becomes available. You will receive an email notification with a tracking update as soon as your order ships. Orders are filled in the sequence they are placed. If you have questions about your specific order's status, please contact us directly.

Installation Guide

Choosing Your Installation Method

There are two ways to install head studs on the L15 engine:

• One-by-one method (head stays on engine): Remove and replace one stud at a time while the head remains in the car. This approach is suitable when the head gasket is known to be in good condition and the head is not being removed for any other reason. It preserves your existing gasket and coolant fill, reducing total labor time significantly.
• Full head removal method: Remove the entire cylinder head before installing the studs. Required if you are replacing the head gasket, performing a port or valve service, or if any stud shows signs of corrosion, galling, or damage during removal. This method gives you full access to clean and inspect the mating surface.

When to Replace the Head Gasket

Replace the head gasket any time you perform a full head removal — even if the old gasket appears undamaged. A used gasket should never be reused after the head has been lifted. Also replace the gasket if you see signs of coolant in the oil, white exhaust smoke, combustion gases in the coolant, or overheating on the L15.

What's Included

• ARP2000 head studs (proper length for the L15 — no spacers or stacked washers required)
• ARP hex nuts
• ARP hardened washers
• ARP assembly lubricant (Ultra-Torque packet)

Lubricant Application

Apply the included ARP Ultra-Torque lubricant to the stud threads, the underside of each nut, and the washer-to-nut contact face. Do not use engine oil or any other lubricant in place of the supplied packet — ARP torque specs are calibrated specifically for Ultra-Torque and substituting a different lubricant will result in incorrect clamping force.

Torque Sequence

Follow the OEM Honda torque sequence for the L15 cylinder head. ARP recommends a minimum of three passes using a cross-pattern (center outward) to seat the studs evenly:

• Pass 1: Snug all nuts to approximately 30 ft-lb in sequence.
• Pass 2: Torque to 60 ft-lb in sequence.
• Pass 3: Final torque to the ARP-specified value for ARP2000 studs with Ultra-Torque lubricant (refer to the instruction sheet included in the kit for the confirmed final spec, as ARP periodically updates torque values).

Note: Always use a calibrated torque wrench. Do not use an angle/degree method unless specifically called out by ARP for this application.

Required Components Not Included

• Replacement head gasket (required for full head removal installations)
• New OEM or equivalent head bolts/ARP studs stretch check (if reusing any OEM hardware on other fastener positions)
• New coolant and coolant sealing washers (if coolant system is opened)
• Thread chaser or tap set to clean block threads before installation