JEGS Performance Mini Starter for GM LS Engines, 11:1 Compression (10043)
$167.98
A compact JEGS gear-reduction mini starter for GM LS engines up to 11:1 compression, with a 168-tooth flywheel or flexplate.
- Fits LS engines: 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 6.6L & 7.0L with a 168-tooth flywheel
- Up to 11:1 compression: 6:1 gear reduction, 1.4 kW (1.9 HP), 160 ft-lbs torque
- Light and compact: 7.25 lbs, lighter than a factory starter
- Adjustable mount: Billet aluminum mounting block with indexable rotation
- Ready to bolt on: Includes mounting bolts and shims
Amazon price as of Oct 8, 2026, subject to change. Check Amazon for the current price. Checkout is completed on Amazon, not through Planet X Performance.
The JEGS 10043 Performance Mini Starter is a small, lightweight gear-reduction starter for GM LS engines. It’s rated to crank engines up to 11:1 compression, its compact size suits tight spaces, and JEGS says its LS starters are designed to clear most oil pans and headers. The billet aluminum mounting block is adjustable, with indexable rotation.
Key specs
| Brand / part number | JEGS 555-10043 |
|---|---|
| Compression rating | Up to 11:1 |
| Gear reduction | 6:1 |
| Output | 1.4 kW (1.9 HP) |
| Torque | 160 ft-lbs |
| Motor | Permanent magnet |
| Rotation | 360 (indexable mounting block) |
| Flywheel / flexplate | 168-tooth |
| Mounting | Pad mount, 2.875 in. staggered bolt pattern, 10 mm holes |
| Weight | 7.25 lbs |
| Warranty | 30 days (per Amazon listing) |
Fits
- GM LS engines: 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 6.6L & 7.0L
- Required: 168-tooth flywheel or flexplate
- Compression: 11:1 or lower
In the box: Starter with billet aluminum mounting block, (2) 10 mm x 1.5 x 4.375 in. bolts with 13 mm hex heads, (1) .015 in. starter lowering shim, and (1) .060 in. round shim that fits between the starter body and the mounting block.
Check before you buy
- Tooth count: Confirm your flywheel or flexplate has 168 teeth
- Compression: Over 11:1? JEGS also makes a mini starter rated up to 14:1
- Clearance: Check room around your headers and oil pan. Compare with the JEGS dimension drawing
- Setup: Set pinion clearance and backlash with the included shims, per the JEGS installation instructions
Mounting hardware included.
Recommended: For replacement mounting bolts, we suggest the ICT Billet LS starter bolt kit (551681) or the ARP stainless LS starter bolt kit (430-3511).
Broken starter ear? If the outboard starter mounting ear on your LS block is cracked or broken, the Trinity Starter Bracket can repair it without machining. The block’s inboard starter bolt hole must still be intact. The Trinity can’t fix a block where the whole starter ear is missing.
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| Brand | JEGS |
|---|
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