Sleeper Extension Panels – Panelite
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Sleeper Extension Panels

Browse our selection of Sleeper Extension Panels

Extension panels are 3″ wide and extend along the bottom of the sleeper extension fairing. These are designed for Peterbilt 379 models. Available with or without lites. Hardware is included.

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Part # : 10010404

21″ EXTENSION PANELS

For 1997+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. For 70″ sleepers (78″ new sleeper size). Measures 3″ wide. With 1 amber clear M1 LED lite. For 12″ or 16″ lite spacing.

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Part # : 10010383

BLANK 4″ WIDE EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. Measure 4″ wide. For 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper sizes). Blank (no lites). Sold in pairs.

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Part # : 10010384

BLANK 4″ WIDE EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. Measure 4″ wide. For 70″ sleepers (78″ new sleeper sizes). Blank (no lites). Sold in pairs.

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Part # : 10962802

BLANK 4″ WIDE PAINTABLE EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. Measure 4″ wide. For 48″ and 63″ sleepers (58″ and 72″ new sleeper sizes). Paintable. Blank (no lites). Sold in pairs.

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Part # : 10010423

BLANK 4″ WIDE PAINTABLE EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. Measure 4″ wide. For 70″ sleepers (78″ new sleeper sizes). Paintable. Blank (no lites). Sold in pairs.

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Part # : 10010381

BLANK EXTENSION PANELS

For 1997+ Peterbilt 379, 2007+ 388 models and 2007-2008 Peterbilt 389 models. For 70″ (78″ new) Unibilt sleepers. Sold in pairs. Blank (no lites). Measure 3″ wide. Hardware included.

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Part # : 10010380

BLANK EXTENSION PANELS

For 1987+ Peterbilt 379 models, 2007+ Peterbilt 388 models as well as 2007-2008 Peterbilt 389 models. Measure 3″ wide. For 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper sizes). Blank (no lites). Sold in pairs.

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Part # : 10010428

EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. For 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper size). With amber clear 3/4″ round LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010429

EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. For 70″ sleepers (78″ new sleeper size). With amber 3/4″ round LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010430

EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. For 70″ sleepers (78″ new sleeper size). With amber clear 3/4″ round LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010419

EXTENSION PANELS

For Peterbilt 379, 388 and 389  models for 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper size). Amber M5 LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010420

EXTENSION PANELS

For Peterbilt 379, 388 and 389  models for 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper size). Amber clear M5 LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010421

EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. For 70″ sleepers (78″ new sleeper size). With 2 amber M5 LED lites per panel. Sold in pairs. Measure 4″ wide.

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Part # : 10010422

EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. For 70″ sleepers (78″ new sleeper size). With 2 amber clear M5 LED lites per panel. Sold in pairs. Measure 4″ wide.

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Part # : 10010427

EXTENSION PANELS

For Peterbilt 379, 388 and 389 models. For 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper size). With amber 3/4″ round LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010414

EXTENSION PANELS

For 1997+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 70″ sleepers (78″ new). Sold in pairs. With amber clear M5 LED lites. Measures 3″ wide.

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Part # : 10010412

EXTENSION PANELS

For 1997+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 70″ (78″ new) sleepers. Sold in pairs. With amber M5 LED lites. Measures 3″ wide.

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Part # : 10010410

EXTENSION PANELS

For 1987+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper sizes). Sold in pairs. With amber clear M5 LED lites. Measures 3″ wide.

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Part # : 10010408

EXTENSION PANELS

For 1987+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper sizes). Sold in pairs. With amber M5 LED lites. Measures 3″ wide.

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Part # : 10010392

EXTENSION PANELS

For 1987+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper sizes). Sold in pairs. With amber M1 LED lites. Measures 3″ wide.

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Part # : 10962118

EXTENSION PANELS

For 1987+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 36″, 48″ and 63″ sleepers. Sold in pairs. With 3 amber clear M1 LED lites. Measures 3″ wide.

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Part # : 10010391

EXTENSION PANELS

For 1997+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 70″ sleepers (78″ new sleeper size). Sold in pairs. With 1 amber clear M1 LED lite. Measures 3″ wide.

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Part # : 10010390

EXTENSION PANELS

For 1987+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 36″, 48″ and 63″ sleepers. Sold in pairs. With 1 amber clear M1 LED lite. Measures 3″ wide.

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Part # : 10962104

EXTENSION PANELS

For 1997+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 70″ sleepers (78″ new sleeper size). Sold in pairs. With 1 amber M1 LED lite. Measures 3″ wide.

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Part # : 10010388

EXTENSION PANELS

For 1987+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 36″, 48″ and 63″ sleepers. Sold in pairs. With 1 amber M1 LED lite. Measures 3″ wide.

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Part # : 10010382

EXTENSION PANELS

For 1987+ Peterbilt 379, 2007+ 388 models and 2007-2008 Peterbilt 389 models. For 70″ Unibilt sleepers. Sold in pairs. With 1 amber 2″ round lite. Matches 8″, 12″ or 16″ lite spacing. Hardware, lites and harnesses included.

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Part # : 10010394

EXTENSION PANELS – 4″ WIDE

For Peterbilt 379, 388 and 389 models. For 70″ (78″) sleepers. M1 amber LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010395

EXTENSION PANELS – 4″ WIDE

For Peterbilt 379, 388 and 389 models. For 70″ (78″) sleepers. M1 amber clear LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010396

EXTENSION PANELS – 4″ WIDE

For Peterbilt 379, 388 and 389 models. For 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper sizes). M1 amber LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010397

EXTENSION PANELS – 4″ WIDE

For Peterbilt 379, 388 and 389 models. For 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper sizes). M1 amber clear LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10962801

EXTENSION PANELS WITH GLO-LITES

For 2007+ Peterbilt 379 Ultra cab models as well as 388 and 389 models. Use with 78″ (70″ old) sleepers. Sold in pairs. With 1 2″ round glo-lite. Measure 3″ wide.

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Part # : 10962800

EXTENSION PANELS WITH GLO-LITES

For 2007+ Peterbilt 379 modes, 2011+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Use with 44″, 58″ and 72″ sleepers (36″, 48″ and 63″ old sleeper sizes). Sold in pairs. With 3 amber 2″ round LED glo-lites. Measures 3″ wide.

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Part # : 10010393

EXTENSION PANELS WITH TURN SIGNAL MOUNT

For 1987+ Peterbilt 379 models, 2007+ Peterbilt 388 models and 2007-2008 Peterbilt 389 models. Fit 36″, 48″ and 63″ sleepers (44″, 58″ and 72″ new sleeper sizes). Sold in pairs. With 1 amber M1 LED lite and turn signal mount. Measures 3″ wide.

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Part # : 10962912

PAINTABLE UNDERLIT EXTENSION PANELS

For Peterbilt 379 models. Also fit 388 and 389 models. For 48″ and 63″ (44″, 58″ and 72″ new sleeper sizes). Underlit with amber clear 3/4″ round LED lites. Paintable. Sold in pairs. Measure 4″ wide.

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Part # : 10962904

UNDERLIT EXTENSION PANELS

For Peterbilt 379, 388, 2007-2008 2014+ 389 models. For 36″, 48″ and 63″ (44″, 58″ and 72″ new) sleepers. Underlit with 4 amber clear 3/4″ round LED lites per extension panel. Sold in pairs. Measure 3″ wide.

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Part # : 10010424

UNDERLIT EXTENSION PANELS

For Peterbilt 379, 388, 2007-2008 and 2014+ 389 models. For 70″ (78″ new) sleepers. Underlit with amber clear 3/4″ round LED lites. Sold in pairs. Measure 3″ wide.

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Part # : 10010425

UNDERLIT EXTENSION PANELS

For Peterbilt 379 models. Also fit 388 and 389 models. For 36″, 48″ and 63″ (44″, 58″ and 72″ new sleeper sizes). Underlit with 4 amber clear 3/4″ round LED lites per extension panel. Sold in pairs. Measure 4″ wide.

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Part # : 10010426

UNDERLIT EXTENSION PANELS

For Peterbilt 379, 388, 2007-2008 2014+ 389 models. For 70″ (78″) sleepers. Underlit with amber clear 3/4″ round LED lites. Sold in pairs. Measure 4″ wide.

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Part # : 10010431

UNDERLIT PAINTABLE EXTENSION PANELS

For Peterbilt 379, 388, 2007-2008 and 2014-2017 389 models. For 70″ (78″) sleepers. Paintable Underlit with amber clear 3/4″ round LED lites. Sold in pairs. Measure 4″ wide.

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