The McLeod Racing 8619 is a sealed roller pilot bearing engineered specifically for GM LS engine applications. Designed to support the transmission input shaft where it meets the crankshaft, this McLeod 8619 provides precise alignment for clutch engagement across a wide range of Camaro and Corvette platforms from 2006 through 2015.
As a sealed roller design, the 8619 offers lower rotational friction and self-contained lubrication compared to traditional bronze bushings, making it a reliable upgrade or direct replacement for LS-powered manual transmission builds. McLeod Racing has built a reputation for precision drivetrain components, and the 8619 reflects that commitment to quality and fit.
Why the Pilot Bearing Matters
The pilot bearing is a small but critical component in any manual transmission drivetrain. It sits in the center bore of the crankshaft and supports the nose of the transmission input shaft, keeping the shaft centered during clutch disengagement. Without a properly functioning pilot bearing, the input shaft can wobble slightly when the clutch pedal is pressed, causing:
- Rough or notchy gear changes, especially at low speeds
- Premature wear on the transmission input shaft and clutch disc hub
- Vibration or noise during clutch disengagement
- Shortened clutch disc and pressure plate service life
- Difficulty engaging first or reverse gear from a stop
Replacing a worn or damaged pilot bearing during any clutch service is considered best practice. Installing a quality unit like the McLeod 8619 ensures the input shaft is properly supported throughout the full range of clutch pedal travel, protecting the entire drivetrain investment.
Sealed Roller Design vs. Bronze Bushing
McLeod offers two pilot bearing options for compatible GM LS applications. Understanding the difference helps ensure the right part is selected for each build.
| Feature | 8619 (This Part) | 8617 |
|---|---|---|
| Bearing Type | Sealed Steel Roller Bearing | Oilite Bronze Bushing |
| Lubrication | Self-contained, sealed for life | Oil-impregnated bronze, requires light grease at install |
| Rotational Friction | Very low (rolling contact) | Low (sliding contact) |
| Best For | Performance and street/strip builds seeking minimal drag | Stock-style replacements and budget-conscious builds |
| Installation | Press or drive in; no additional lubrication needed | Press or drive in; apply thin film of grease to shaft |
For most performance applications, the sealed roller design of the MLR8619 is the preferred choice. It eliminates the need to apply grease during installation and reduces the chance of under- or over-lubrication errors that can lead to premature failure.
Vehicle Fitment
The McLeod 8619 pilot bearing is compatible with the following vehicles equipped with GM LS engines and manual transmissions. Verify your vehicle has a manual transmission before ordering.
| Year | Make | Model | Trim |
|---|---|---|---|
| 2006 | Chevrolet | Corvette | Z06 |
| 2007 | Chevrolet | Corvette | Z06 |
| 2008 | Chevrolet | Corvette | Z06 |
| 2008 | Chevrolet | Corvette | Base |
| 2009 | Chevrolet | Corvette | Z06 |
| 2009 | Chevrolet | Corvette | ZR1 |
| 2010 | Chevrolet | Corvette | Z06 |
| 2010 | Chevrolet | Corvette | Grand Sport |
| 2010 | Chevrolet | Corvette | Base |
| 2010 | Chevrolet | Camaro | SS |
| 2011 | Chevrolet | Corvette | Z06 |
| 2011 | Chevrolet | Corvette | Z06 Carbon |
| 2011 | Chevrolet | Corvette | ZR1 |
| 2011 | Chevrolet | Corvette | Grand Sport |
| 2011 | Chevrolet | Corvette | Base |
| 2011 | Chevrolet | Camaro | SS |
| 2012 | Chevrolet | Corvette | Z06 |
| 2012 | Chevrolet | Corvette | ZR1 |
| 2012 | Chevrolet | Corvette | Grand Sport |
| 2012 | Chevrolet | Corvette | Base |
| 2012 | Chevrolet | Camaro | SS |
| 2012 | Chevrolet | Camaro | ZL1 |
| 2013 | Chevrolet | Corvette | 427 |
| 2013 | Chevrolet | Corvette | Z06 |
| 2013 | Chevrolet | Corvette | ZR1 |
| 2013 | Chevrolet | Corvette | Grand Sport |
| 2013 | Chevrolet | Corvette | Base |
| 2013 | Chevrolet | Camaro | SS |
| 2013 | Chevrolet | Camaro | ZL1 |
| 2014 | Chevrolet | Camaro | SS |
| 2014 | Chevrolet | Camaro | Z/28 |
| 2014 | Chevrolet | Camaro | ZL1 |
| 2015 | Chevrolet | Camaro | SS |
| 2015 | Chevrolet | Camaro | Z/28 |
| 2015 | Chevrolet | Camaro | ZL1 |
What’s Included
- 1x McLeod Racing 8619 Sealed Roller Pilot Bearing
Full Specifications
| Specification | Detail |
|---|---|
| Part Number | MLR8619 |
| MPN | 8619 |
| UPC | 887753315892 |
| Brand | McLeod Racing |
| Type | Sealed Roller Pilot Bearing |
| Outer Diameter (OD) | 1.709 in. |
| Inner Diameter (ID) | 0.592 in. |
| Width | 0.510 in. |
| Bearing Construction | Sealed steel roller |
| Application | GM LS engine, manual transmission; 2006-2015 Chevrolet Corvette and Camaro |
| Warranty | 90 days (McLeod Racing limited warranty) |
California Proposition 65 Warning
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Q: What is the McLeod MLR8619 used for?
A: The 8619 is a sealed roller pilot bearing for GM LS engines paired with manual transmissions. It installs in the crankshaft bore and supports the nose of the transmission input shaft, keeping it centered during clutch operation.
Q: Which vehicles does the 8619 fit?
A: The 8619 fits 2006-2015 Chevrolet Corvette (Base, Z06, Z06 Carbon, Grand Sport, ZR1, and 427 trims) and 2010-2015 Chevrolet Camaro (SS, ZL1, and Z/28 trims) equipped with LS engines and manual transmissions. See the full fitment table above for individual year and trim coverage.
Q: Does the 8619 require any lubrication during installation?
A: No. The 8619 is a sealed roller bearing with self-contained lubrication. No additional grease is required at the time of installation. Avoid applying grease to the bearing itself, as it is sealed for life.
Q: What is the difference between the 8619 and the 8617?
A: The 8619 is a sealed steel roller bearing, while the MLR8617 is an Oilite bronze bushing. Both serve the same function in compatible applications, but the roller design of the 8619 produces less rotational friction and does not require grease at installation. The 8617 is a traditional sliding-contact bushing that benefits from a light coat of grease on the input shaft tip.
Q: Is the 8619 a direct fit, or does it require modification?
A: The 8619 is designed as a direct-fit replacement for compatible GM LS applications. It presses or drives into the crankshaft bore without modification. A proper bearing driver or socket of the appropriate size is recommended for installation to avoid damage to the bearing.
Q: Should the pilot bearing be replaced during a clutch job?
A: Yes. Since accessing the pilot bearing requires full clutch disassembly, it is strongly recommended to replace the pilot bearing whenever the clutch is removed. The cost of the 8619 is minimal compared to the labor involved, and replacing it proactively prevents the need to repeat the disassembly later.
Q: What is the outer diameter of the 8619?
A: The 8619 has an outer diameter of 1.709 in., an inner diameter of 0.592 in., and a width of 0.510 in. These dimensions are specific to the GM LS crankshaft bore and input shaft nose profile for the covered applications.
Q: What warranty does the McLeod 8619 carry?
A: The 8619 is covered by McLeod Racing’s standard 90-day limited warranty against defects in materials and workmanship under normal use conditions.
Q: Can the 8619 be used with an automatic transmission conversion?
A: No. Pilot bearings are only required in manual transmission applications. If converting from manual to automatic, the pilot bearing is not needed and can be left out or replaced with a pilot bearing plug. The 8619 is intended solely for manual transmission builds on compatible GM LS platforms.
Q: Is this part subject to California Proposition 65?
A: Yes. The 8619 is subject to California Proposition 65. See the warning section above for full disclosure. Customers in California should review the P65Warnings.ca.gov website for additional information.
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