Product Description:
The Flexplate Adapter Spacer is specifically designed for LS/LT engines and TH350/TH400 transmissions. It allows you to bolt GM automatic transmissions to the engine or older GM automatic transmissions to LS series engines. This adapter spacer is compatible with GM LS series Xtreme Duty Flexplate with a 4mm thick center plate and suitable for GM automatic transmissions with 1998-2004 LS engines using TH350 or TH400 transmission.

Made from high-quality aluminum alloy, this crankshaft adapter has excellent ductility, electrical conductivity, and thermal conductivity. It also exhibits strong ferromagnetic properties, ensuring stable characteristics and high reliability. The adapter spacer is easy to install by plugging it into the rear of the crankshaft. If using a curved flex board, this adapter spacer provides the correct distance and guide dimensions.

Not only does this adapter spacer offer convenience during installation, but it also helps prevent damage to the input shaft of the transmission when replacing it. It is crucial to consider pilot bushing hole changes and flex plate/flywheel configuration for interchangeability.

Whether you're performing an LS engine conversion or an LS swap project, this Flexplate Adapter Spacer is an essential component. Its compatibility with GM Gen III/IV LS and Gen V LT series engines makes it versatile for various applications. Upgrade your transmission with confidence using this reliable and high-quality adapter spacer kit.

FEATURES

• • • • Compatible with GM LS series Xtreme Duty Flexplate with 4mm thick center plate
      • Suitable for GM automatic transmission with 1998-2004 LS engine using TH350 or TH400 transmission
      • Easy installation: Just plug in the rear of the crankshaft
      • Prevents damage to the input shaft of the transmission when replacing the transmission
      • High-quality aluminum alloy material with good ductility, electrical conductivity, and thermal conductivity

Where do your products come from?
We source inventory through liquidation and wholesale channels, including overstock, closeouts, shelf-pulls, and inspected customer returns from major retailers and distributors.

Why are your prices so much cheaper than retail?
We buy inventory in bulk and price items to move quickly. This reduces overhead and removes typical retail markups.

Are the products authentic?
We focus on legitimate sourcing channels and aim to describe items accurately with clear condition information.

What does “Like New” mean?
Like New items are in excellent condition with little to no signs of use. This can include items that were opened but are still in like-new condition.

Why do some items have different packaging?
Liquidation inventory may include items with opened or replacement packaging. Condition is always shown on the listing.

Do you combine shipping?
Yes—when possible, items may ship together. Shipping is calculated at checkout based on weight, dimensions, and destination.

Do you offer free shipping?
Yes—free shipping applies to orders $50+ (as shown on the site).

How fast do you ship and which carriers do you use?
Shipping options and timelines are shown at checkout. We typically use major carriers such as USPS, UPS, and FedEx depending on package and destination.

What is your return policy?
Please refer to our Returns Policy page for eligibility and timelines.