ARP Head Stud Kit 11mm - Land Cruiser 1HZ, 1HZT & 1HDT

Article number: ARP 2000 1HZ, 1HDT Head Studs HSKTO340A
Availability: In stock (2)

ARP 2000 Cylinder Head Stud set for the 1HZ, 1HZ-T and 1HD-T engine.

Note: If no stock is showing, fully Paid Pre-orders can be made and will be shipped on a first-ordered, first-shipped basis once product comes into stock.

Absolutely no refunds on pre-orders due to transaction processing costs.

These are the direct replacement fit 11mm ARP Head Studs. Kit comes with 26 studs and hardware for the Land Cruiser 1PZ, 1HZ, 1HDT engines.

These ARP head studs provide clamping forces that are 40% greater than the stock torque to yield bolts.

No modification to head bolt holes in the block or head is required. This will help gain the increased head clamping required in performance applications. They will achieve a more evenly distributed and accurate torque load compared to that of head bolts by eliminating the twisting force created during tightening. This ultimately translates into higher reliability and a lower chance of head gasket failure.

Testing has demonstrated that stock TTY head bolts range around 11,000 lbs of force on average, these ARP studs provide considerably more even clamping forces averaging 15,785 lbs.

Installation instructions are included in the kit.

** Do not use the factory torque procedure with this head stud kit **

There is a 13mm version available for even greater clamping force, however these require machining the block (drilling and tapping) and re-drilling the holes in the head for clearance. Please enquire if you are seeking this particular head stud kit (13mm Kit = HSKTO340).

Note: Make sure the head bolt holes are properly cleaned out, and that you use the supplied ARP Ultra Torque lubricant under the nut and washer while torquing in to place.

Part Number:

ARP - Made in USA

Please purchase insurance with your order!
RADD Cruisers is NOT responsible for any item after it leaves our custody.






When this item is out of stock, I will accept Pre-Orders with full payment. Items will be shipped on a first-ordered, first-shipped basis. Limited stock has already been reserved from the supplier.   

2022 07 25

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