Bolster Springs
GENUINE PARTS
Shear and Compression Bolster Spring Loads The shear load component enables high suspension articulation and a lower unladen suspension spring rate. The compression load component allows the suspension to carry heavy loads. Trust genuine Hendrickson bolster springs to deliver these benefits and enable HAULMAAX EX, HAULMAAX and HN suspensions to operate and perform as designed. For optimum performance, HAULMAAX EX, HAULMAAX and HN suspension sys- tems require a soft spring rate when unloaded and a stiff spring rate when loaded. Typical competitor urethane bolster springs do not meet Hendrickson’s spring rate criteria, and their use will void any applicable Hendrickson warranty. In addition, competitor urethane bolsters can degrade ride quality and create excessive stress on the suspension. Hendrickson does not authorize the use of competitor urethane components in any HAULMAAX EX, HAULMAAX and HN suspension system.
BOLSTER SPRING SERVICE KITS
HAULMAAX EX Vehicles built prior to July 15, 2024
HAULMAAX EX Vehicles built after July 15, 2024
Kit No. 34013-514 Shown
Kit No. 34013-526, One Beam (40K lb capacity) (4) Bolster Springs (1) Jounce Stop (1) Progressive Load Spring (8) M12 x 35 mm Round Head Square Neck Bolts (6) M12 x 50 mm Flange Bolts (4) M12 x 65 mm Flange Bolts (18) M12 Flange Nuts (4) M20 x 50 mm Flange Bolts (4) M20 Flange Nuts
Kit No. 34013-527, One Beam (Tie-Bar, 46K•52K lb capacity) (4) Tie-Bar Bolster Springs (2) Tie-Bar Bolster Spring Spacers (1) Jounce Stop (1) Progressive Load Spring (8) M12 x 35 mm Round Head Square Neck Bolts (6) M12 x 50 mm Flange Bolts (4) M12 x 65 mm Flange Bolts (2) M12 x 270 mm Flange Bolts (18) M12 Flange Nuts (4) M20 x 50 mm Flange Bolts (4) M20 Flange Nuts
Kit No. 34013-514, One Beam (Tie-Bar, 46K•52K lb capacity) (4) Tie-Bar Bolster Springs (2) Tie-Bar Bolster Spring Spacers (1) Jounce Stop (1) Progressive Load Spring (12) M12 x 35 mm Round Head Square Neck Bolts (6) M12 x 50 mm Flange Bolts (4) M12 x 65 mm Flange Bolts (2) M12 x 270 mm Flange Bolts (22) M12 Flange Nuts
Kit No. 34013-513, One Beam (40K lb capacity) (4) Bolster Springs (1) Jounce Stop (1) Progressive Load Spring (12) M12 x 35 mm Round Head Square Neck Bolts (6) M12 x 50 mm Flange Bolts (4) M12 x 65 mm Flange Bolts (22) M12 Flange Nuts
Kit No. 34013-527 Shown
HAULMAAX
HN
Bolster Springs Service Kit No. 60879-000 Vehicles built after Feb. 1996 (2) Bolster Springs Bolster Springs Service Kit No. 64718-000 Vehicles built between Nov. 1988 – Feb. 1996 (2) Bolster Springs
Tie-Bar Bolster Springs Service Kit No. 64179-048 (2) Tie-Bar Bolster Springs (1) Bolster Spring Spacer (1) Wear Plate (1) ½" Tie-bar Bolt (9) ½" Flange Locknuts
Bolster Springs Service Kit No. 64179-049 (2) Bolster Springs (1) Wear Plate (8) ½" Flange Locknuts
Tie-Bar Bolster Springs and Progressive Load Spring Service Kit No. 60961-712 (2) Tie-Bar Bolster Spring Kit No. 64179-048 (1) Progressive Load Spring Kit No. 60961-745
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Reference Lit. No. 45745-215 | 855-743-3733
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