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Engines and Components› Crankshafts and Components

Advance Adapters, Inc

LS Engine to GM TH350/ 700R/200R4 Trans Kit

$191.46 $176.71 Save $14.75

SKU: A01D 712500A

In Stock
In Stock
Ships by Sep 25
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Advance Adapters 712500A is a flexplate kit designed to adapt LS-series engines to TH350, 700R4, and 200R4 transmissions. This kit includes a custom flexplate and crank spacer to compensate for the shorter engine crank. It features a 168-tooth ring gear.
Show original supplier description

Part #: 712500A

Transmission Adapter - Flexplate - Flexplate Bolts / Crank Spacer Included - TH350 / 700R / 200R4 Transmission to GM LS-Series - Kit

Vehicle Symptoms
  • Transmission won't bolt to LS engine
  • Crankshaft pilot depth mismatch on LS swap
  • Flexplate ring gear doesn't align with starter
  • Noise from bellhousing after LS swap
  • Engine cranks but transmission doesn't engage
Relevant Conversations
  • LS swap flexplate for TH350 needed
  • Advance Adapters 712500A review
  • LS engine to 700R4 flexplate adapter kit
  • Crankshaft spacer for LS swap
  • TH350 won't mate to LS engine help
  • LS flexplate bolt pattern vs TH350
  • LS to 200R4 flexplate kit install
  • LS swap bellhousing noise fix
  • Best flexplate kit for LS to TH350
  • LS swap transmission adapter forum

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandAdvance Adapters, Inc
Part NumberA01D 712500A
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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