Selecting the right main and rod bearings is essential for reliable LS engine performance. The following KS-specified sets cover standard-size bearings for 4.8L, 5.3L, 6.0L, and related LS-series V8s, with options from reputable brands. This guide highlights key features, compatibility, and practical considerations to help you compare selections for stock rebuilds or performance builds.
| Brand | Name | Engine Compatibility | Notes |
|---|---|---|---|
| KING | Rod And Main Bearing Set For LS Engines | 4.8L, 5.3L, 6.0L V8 | Standard size; oversizes available on request; substitutions if out of stock |
| Clevite 77 | Rod And Main Bearing Kit For LS Engines | 4.8L, 5.3L, 6.0L LS family | Standard journal sizes; size guidance required before cart |
| Armker | STD Main & Rod Bearing Set Replacement; Includes rods and mains | LS engines 1997-2013 range | Standard size; comprehensive kit with replacement parts |
| Michigan Motorsports | LS Main Crank Bearings – SI-Series | 4.8L, 5.3L, 5.7L, 6.0L, 6.2L LS engines | Premium fitment for stock and performance builds |
| J MARTIN AUTO | Bundled Standard Size Rod And Main Bearing Set | 2000-2015 Chevy GM LS1/LS2/LS6/LS7/LS9 | Includes main cap bolts; standard size |
King Rod And Main Bearing Set For LS Engines
The KING bearing set targets LS-family engines, including 4.8L, 5.3L, and 6.0L V8 platforms. It specifies standard-size bearings with oversize options available on request and notes substitutions if stock is depleted. This straightforward kit focuses on reliable journal support for routine rebuilds.
Mahle/Clevite Rod And Main Bearings Kit for LS Engines
From Clevite 77, this kit covers standard LS engine sizes and emphasizes appropriate journal sizing. Users are advised to select the correct size before adding to the cart. It’s positioned as a solid choice for standard LS rebuilds seeking dependable OEM-style fit and durability.
Armker STD Main & Rod Bearing Set
Armker offers a standard-size crankshaft bearing kit for GM LS engines spanning 4.8L to 6.2L LS-series V8s. The kit includes both rod and main bearings and notes compatibility with LS1/LS2/LS3-era builds, with reference part numbers to match OE specifications and reduce guesswork during install.
Michigan Motorsports LS Main Crank Bearings
These SI-Series main bearings are designed for both stock and performance LS builds. They are manufactured to OEM specifications for direct replacement, aiming to maintain oil clearance and minimize wear. They suit engine rebuilds and upgrades where precision fitment matters.
J Martin Auto Bundled Bearings With Bolts
J Martin Auto provides a bundled kit featuring rod and main bearings along with alternative main cap bolts. It targets LS engines across a wide range (2000-2015) and emphasizes compatibility with standard-size crank journals and bolt replacements to simplify installation and ensure secure clamping.
Armker STD Main & Rod Bearings Kit For Chevy GM LS
Armker offers another standard-size kit with detailed vehicle-era fitment notes for SBC and LS engines. This option emphasizes compatibility with various LS generation configurations and lists standard clearance for direct replacement in maintenance and builds.
GDUKOP Upgrade STD Main & Rod Bearing Kit With Piston Rings
GDUKOP presents an upgraded STD kit including piston rings, designed for LS Gen III/IV 4.8L and 5.3L engines. It targets replacements with the standard bore and journal sizing, listing OE-number references to align with GM specifications and ensuring a straightforward installation path.
Buying Guide: Key Considerations For Main And Rod Bearings
- Engine compatibility: Confirm the kit matches your LS generation, bore, and journal size. The 4.8L/5.3L/6.0L range often uses standard-size bearings, but some variants require precise sizing.
- Wear clearance and tolerances: Standard-size bearings should maintain proper oil clearance for reliable lubrication. If rebuilding a high-mileage or performance engine, verify whether an oversized option is needed.
- OEM vs aftermarket: OEM-sourced or similarly matched bearings can offer predictable wear, while performance-oriented bearings may alter tightness and oil flow. Evaluate the intended use (stock replacement vs. enhanced power).
- Full kit contents: Some sets include both rod and main bearings, sometimes with cap bolts or rings. Decide if you want a complete kit or focused bearings plus bolts for assembly.
- Stock availability and substitutions: Some listings mention substitutions if stock runs out. Plan for potential alternates if your preferred brand is unavailable.
- Shop reliability: Choose the brand reputation and verify warranty or return policies. Consistency in fitment and part numbering helps prevent mismatches during installation.
- Installation considerations: Bearing installation requires proper torque specs, oil clearance checks, and cleanliness. Follow engine manufacturer tolerances and service manuals to avoid premature wear.
When choosing a main and rod bearing kit for LS engines, consider your build goals, maintenance history, and the possibility of future upgrades. The options above provide a mix of standard-size bearings suitable for rebuilds and baseline performance projects, with brand support and compatibility notes to guide selection.
Buying Guide Summary of Key Points
- Standard-size bearings are common for LS engine rebuilds; confirm bore and journal specs before purchase.
- Compatibility with your LS generation (Gen III/IV) is essential for a proper fit and oil clearance.
- Consider whether you need a bundled kit (with rods mains and bolts) or separate components.
- Check for availability and potential substitutions to avoid project delays.
- Balance OE-style reliability with any performance goals to pick the right bearing material and tolerance.