Cam Sprocket Bolt Kits

Cam Sprocket Bolt Kits: The Fasteners That Keep Your Cam Timing Honest

The cam sprocket bolt is the fastener that clamps the cam gear to the camshaft, holding your valve timing exactly where you set it. On a stock engine the factory bolt is usually fine, but once you raise boost, spin higher rpm or degree in an aftermarket cam, the load on that joint goes up. That is where upgraded cam sprocket bolt kits earn their keep - a stronger bolt with a proper clamp load resists the cam walking under load and losing your carefully dialed timing. On some engines the answer is an adjustable cam sprocket, which lets you rotate the gear relative to the cam to advance or retard timing when you're tuning.

Anyone who has cracked open a timing cover to chase a timing drift knows this is a cheap part doing a critical job. It is worth doing right the first time.

What ThreePiece stocks

This is a focused category: 3 products currently in stock from 2 brands, ARP and GReddy. Prices run from $35 to $190, which is the current range for what's on the shelf, not a standing promise. The product names cover three engine families - Mitsubishi, Ford and Toyota.

How to choose

The split here is simple. If you want a stronger fastener to hold factory or set timing under more load, the ARP bolt kits are the answer, and they're the affordable end of this category. If you need to actually change cam timing while tuning - advancing or retarding to find power - the GReddy adjustable sprocket does a different job and costs more because it's a machined gear, not just hardware. Match the part to your engine first: the ARP kits are engine-specific to the 4G63 and Duratec 2.3L, and the GReddy unit is for the 1JZ/2JZ.

What else you need with it

You're already inside the timing cover, so budget for the parts that come out with it. Check our head gaskets and gasket kits so you can reseal properly on reassembly, and look at bearings if you're going deeper into the bottom end. Builds that reach for adjustable cam timing often pair with pistons and supporting fuel with fuel pumps. Browse the full Engine Components section for the rest of the hardware, plumbing and fittings a build needs.

Fitment help and ordering

Because these parts are engine-specific, confirm the exact application before you buy - the product name tells you the intended engine. If you're not sure, call our fitment help line at 813-535-5801 or reach us through contact us. All orders ship with free shipping, and Affirm and Katapult financing is available through our financing options if you're spreading a bigger build across payments.

Cam Sprocket Bolt Kits: The Fasteners That Keep Your Cam Timing Honest

The cam sprocket bolt is the fastener that clamps the cam gear to the camshaft, holding your valve timing exactly where you set it. On a stock engine the factory bolt is usually fine, but once you raise boost, spin higher rpm or degree in an aftermarket cam, the load on that joint goes up. That is where upgraded cam sprocket bolt kits earn their keep - a stronger bolt with a proper clamp load resists the cam walking under load and losing your carefully dialed timing. On some engines the answer is an adjustable cam sprocket, which lets you rotate the gear relative to the cam to advance or retard timing when you're tuning.

Anyone who has cracked open a timing cover to chase a timing drift knows this is a cheap part doing a critical job. It is worth doing right the first time.

What ThreePiece stocks

This is a focused category: 3 products currently in stock from 2 brands, ARP and GReddy. Prices run from $35 to $190, which is the current range for what's on the shelf, not a standing promise. The product names cover three engine families - Mitsubishi, Ford and Toyota.

How to choose

The split here is simple. If you want a stronger fastener to hold factory or set timing under more load, the ARP bolt kits are the answer, and they're the affordable end of this category. If you need to actually change cam timing while tuning - advancing or retarding to find power - the GReddy adjustable sprocket does a different job and costs more because it's a machined gear, not just hardware. Match the part to your engine first: the ARP kits are engine-specific to the 4G63 and Duratec 2.3L, and the GReddy unit is for the 1JZ/2JZ.

What else you need with it

You're already inside the timing cover, so budget for the parts that come out with it. Check our head gaskets and gasket kits so you can reseal properly on reassembly, and look at bearings if you're going deeper into the bottom end. Builds that reach for adjustable cam timing often pair with pistons and supporting fuel with fuel pumps. Browse the full Engine Components section for the rest of the hardware, plumbing and fittings a build needs.

Fitment help and ordering

Because these parts are engine-specific, confirm the exact application before you buy - the product name tells you the intended engine. If you're not sure, call our fitment help line at 813-535-5801 or reach us through contact us. All orders ship with free shipping, and Affirm and Katapult financing is available through our financing options if you're spreading a bigger build across payments.