143-18 2.5" ROUND 2.5" OPEN BACK MOUNTING GROMMET

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Technical Specifications

Part Type Mounting Grommet (for 2.5" Round Lights)
Part Number 143-18
Brand / Line Peterson Manufacturing
Description 2.5" Round Open-Back Mounting Grommet. Allows flush/recess mounting of 2.5" diameter sealed lights. Provides additional shock absorbency to extend light life. Requires 2 25/32” mounting hole. Often paired with PL10 plug-style lights.
Compatible Light Diameter 2.5 inch (63.5 mm)
Mounting Hole Size 2 25/32 inch (70.6 mm)
Key Benefit Shock absorption + flush aesthetic mounting
Packaging Poly Bag
Application Flush mounting of 2.5" round clearance, marker, or auxiliary lights on trucks and trailers

Cross References

Brand Part Number
Peterson Manufacturing 143-18
Peterson Manufacturing 142-49 (PL10 Plug for use with this grommet)
Application 2.5" Round Open-Back Mounting Grommet for Flush Installation

Vehicle Fitment

Make Model Model Years Notes
UNIVERSAL All Heavy-Duty Trucks & Trailers using 2.5" Round Lights (Freightliner, Kenworth, Peterbilt, International, Western Star, Mack, Volvo, Sterling) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Flush mounting of 2.5" round clearance, marker, or auxiliary lights
Buses & Coaches 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Flush mounting of 2.5" round lights
Trailers & Vocational Equipment 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Flush mounting of 2.5" round lights
Universal for any vehicle using standard 2.5" round clearance, marker, or auxiliary lights that require flush mounting. Commonly paired with Peterson 143 series and LED143 lights
Notes Peterson 143-18 is the standard open-back grommet for flush mounting 2.5" round lights. It provides both a clean aesthetic and extra vibration dampening. Works with both incandescent and LED versions of Peterson’s 2.5" round lights (including models with PL10 plugs). Often sold in kits with the matching plug (142-49) and grounding screw.
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143-18 2.5" ROUND 2.5" OPEN BACK MOUNTING GROMMET

$2.55