
ATI Performance Products ATI915543: ATI SFI Flexplates
Where we recommend it
LS Swap Hardware: Flexplate, Balancer, Fasteners and the Clutch·#1
An SFI 29.1 steel flexplate for an internally balanced LS with a one-piece rear main seal, 168 teeth, so a used engine starts its new life with a fresh, certified plate.
$219.99In stock
About it
ATI Performance Products ATI915543: Flexplate, 168-tooth, Steel, Internal Engine Balance, 1-piece Rear Main Seal, SFI 29.1, Chevy, LS, Each - Made on state-of-the-art CNC equipment, ATI SFI flexplates are double MIG/TIG-welded with certified American-made materials that far exceed SFI specs for safety. They're manufactured and toleranced from actual OEM drawings to ensure precise fit and location. Each is quality-inspected to exceed the flatness and runout tolerances of the OEM units. They are also precision-balanced on Hines digital equipment with a resolution of 1/10 oz. per inch. Available in dozens of configurations, ATI SFI flexplates can be ordered for fitment on vehicles covering every decade since the mid-1950s.
Specifications
- Brand
- ATI Performance Products
- Model number
- ATI915543
- UPC
- 800157036934
Also in LS Swap Hardware: Flexplate, Balancer, Fasteners and the Clutch

2
ATI Performance Products ATI917304: ATI Super Damper Serpentine Series Harmonic Balancers
ATI's Super Damper for Gen III/IV LS engines: an SFI 18.1 balancer with six serpentine grooves and laser-engraved 360-degree timing marks.

3
ACDelco 12612350: ACDelco GM Genuine Parts Oil Pan Gaskets
GM's own one-piece silicone and aluminum oil pan gasket for the small-block LS, the inexpensive part to renew while the pan is off.

4
ARP 434-3101: ARP Motor Mount Bolt Kits
Stainless 12-point motor mount bolts with flat washers for 4.8, 5.3, 5.7, 6.0, 6.2 and 7.0 L GM engines.

5
ARP 134-1101: ARP Chromoly Header Bolt Kits
Twelve hex-head header bolts for the LS, with washers, rated by ARP at 170,000 psi and much stronger than stock.

6
Ridetech 12319502: Ridetech Motor Mounts
Ridetech's bolt-in engine mount brackets for 1965-1979 F-100 and 1975-1979 F-150 frames, made to accept Ford, small- and big-block Chevy, or LS engines.

7
American Powertrain HMGM01101G: American Powertrain Hydramax Hydraulic Clutch Release Systems
A complete hydraulic release for classic GM cars getting a TKO, TKX, Muncie, Saginaw or Richmond: master, slave, lines, reservoir and an adjustable bracket that keeps the stock firewall.
Where these picks come from: Summit Racing
