Will these work with my factory wheels or do I need aftermarket ones?

L40 extended style nuts fit most factory and aftermarket wheels. Verify your wheel center bore and offset before install — some aggressive deep-dish designs may require clearance testing.

How tight should I torque these?

Refer to your vehicle's service manual for proper torque spec — it varies by platform. Over-torquing aluminum can strip threads; under-torquing defeats the lock feature. Use a calibrated torque wrench.

Do these need any prep or coating before install?

Aluminum arrives ready to install. No paint or primer needed. Clean wheel studs with a wire brush before seating to remove dirt and oxidation.