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Valve Guides are a wear-item. They wear over time and eventually should be replaced. The higher you rev, and the harder you push your engine, the more important tolerances become. If you are spending the time and money to upgrade your valvetrain, be sure your tolerances are correct by replacing your high mileage guides with brand new aftermarket valve guides.
What GSC Power Division have done is actually quite simple, GSC Power Division made valve guides that fit properly, are easier to install, and shaped to help air flow instead of just copying the OEM design. The GSC Power-Division valve guides are made from true C67410 Manganese Bronze and turned on a dedicated precision CNC turning center. What this means for you and your installer is less time fitting guides to the head due to holding the tightest tolerances in the industry with the best quality control possible.
Toyota 2JZ
Intake and Exhaust Valve Guide-Depth Gauge
Intake Valve Guide Specs
| GSC3032 | Standard (in/mm) |
| Total Length | 1.520 / 38.61 |
| Outer Diameter | 0.4347 / 11.04 |
| Valve Stem Diameter | 6mm |
Exhaust Valve Guide Specs
| GSC3031 | Standard (in/mm) |
| Total Length | 1.600 / 40.64 |
| Outer Diameter | 0.4347 / 11.04 |
| Valve Stem Diameter | 6mm |
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Valve Guides are a wear-item. They wear over time and eventually should be replaced. The higher you rev, and the harder you push your engine, the more important tolerances become. If you are spending...
Valve Guides are a wear-item. They wear over time and eventually should be replaced. The higher you rev, and the harder you push your engine, the more important tolerances become. If you are spending...
GSC Power-Division Chrome Polished +1mm Intake & Exhaust Valves Set for 2JZ 2JZ-GTE Supra When creating GSC Power Division's new valve line GSC Power Division set out to create the best...
GSC Power Division Intake Valve Guide / Single Manganese Bronze Valve Guide for Supra MKIV
GSC Power-Division Viton Valve Stem Seals for Toyota 2JZ Platforms. These are an upgrade from the standard OEM material to help cope with the higher heat caused by high performance engines. Sold as a...
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