To change the camshafts on the EVO 10's 4B11 engine there is a special tool that is required from Mitsubishi OEM tools, to unlock the timing chain tensioner. The Mitsubishi genuine parts part number is (MB992103). However the Mitsubishi tool design makes it too difficult for a singe person to work on the engine alone to complete the task. So the TOMEI TCT design utilizes the screw hole on the top of the head deck surface to lock in the TCT tool into position to allow the single staff worker to have hands free of that task to continue working on the head to complete the camshaft exchange job.
Insert the precision driver (or similar tool of the same size) into the special service hole where the Timing chain tensioner is and hold it in there to keep it unlocked. The TCT release bar is then to be inserted into the timing chain gallery between the cam gears and pushed against the timing cam gear ASSY on the intake side which will push the chain tensioner inside the case and make it loose. Whilst the screw driver is in the service hole the TCT will relieve the tension on the chain when the TCT is pressured up against the tension.
Features:
- Designed to deliver trouble-free, consistent performance
- Right for your vehicle and lifestyle
- Made from high-quality materials for ultimate durability
- Manufactured to meet or exceed strict quality requirements
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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We reward enthusiasts who trust us with their major projects. Use these tiered codes at checkout to apply instant savings to your order:
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Fitment Guarantee:
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Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
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Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
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Exclusions:
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To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.
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Need assistance? Reach out via our
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Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
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Verify Your Build:
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If this product doesn't list your specific vehicle data, simply reach out to support@autohousesupply.com. We will manually verify compatibility for you.
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Our Promise:
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When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.
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