Mack RD688 Axles &amp; Differentials For Sale

(888) 519-___ SHOW
NUMBERCall Seller

2000 Mack RD688P Front Axle Assembly

$1,250 USD

Good used inspected 2000 Mack RD688P Complete Front Axle Beam. 30 day guarantee for swap or refund that axle will take kingpins

Condition	Used
Fits To Make(s)	MACK
Fits To Model(s)	RD688P
Stock Number	1068106
MLS Number	14093205
Category	Axle Assemblies, Front
Last Updated	1/15/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

(855) 980-___ SHOW
NUMBERCall Seller

1999 Mack RD688S Front Axle Assembly

Contact for price

BAD KING PIN'S, Hub Bolts: PILOT, Brake Type: ABS, Axle Make: MACK

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	RD688S
Will Fit Year(s)	1999
Stock Number	045007-3
MLS Number	13827434
Category	Axle Assemblies, Front
Last Updated	9/23/2025
Location	Farr West, UT, US
Sold By	Rocky Mountain Truck Parts

(855) 905-___ SHOW
NUMBERCall Seller

2001 Mack RD688 King Pin Set

$1,250 USD

Condition	Used
Fits To Make(s)	MACK
Fits To Model(s)	RD688
Stock Number	2114357
MLS Number	11096948
Category	King Pin Sets
Last Updated	7/18/2025
Location	Toledo, OH, US
Sold By	LKQ Heavy Truck

(844) 402-___ SHOW
NUMBERCall Seller

2001 Mack RD688S Right Spindle

Contact for price

(Used) 2001 Mack RD688S, COMPLETE SPINDLE KNUCKLE- Side: Passenger Right Side, Material: Steel, Make: Mack, Model: 3QHF545P2, Capacity: 18,000 Lbs, Hub Bolts: 10, Brake Type: Drum, For more...

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	RD688S
Will Fit Year(s)	2001
Side	RIGHT
Capacity	18,000
Stock Number	P-105258
MLS Number	13657818
Category	Spindles / Knuckles
Last Updated	2/9/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

(844) 402-___ SHOW
NUMBERCall Seller

2001 Mack RD688S Left Spindle

Contact for price

(Used) 2001 Mack RD688S, COMPLETE SPINDLE KNUCKLE- Side: Driver Left Side, Material: Steel, Make: Mack, Model: 3QHF545P2, Capacity: 18,000 Lbs, Hub Bolts: 10, Brake Type: Drum, For more...

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	RD688S
Will Fit Year(s)	2001
Side	LEFT
Capacity	18,000
Stock Number	P-105257
MLS Number	13657817
Category	Spindles / Knuckles
Last Updated	2/9/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

(844) 402-___ SHOW
NUMBERCall Seller

2001 Mack RD688S Front Axle Assembly

Contact for price

(Used) 2001 Mack RD688S, COMPLETE FRONT AXLE- Center Leaf to Center Leaf: 34", Make: Mack, Model: 3QHF545P2, Capacity: 18,000 Lbs, Hub Bolts: 10, Brake Type: Drum, For more information about...

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	RD688S
Will Fit Year(s)	2001
Capacity	18,000 lbs.
Stock Number	P-105247
MLS Number	13657804
Category	Axle Assemblies, Front
Last Updated	2/9/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

(844) 641-___ SHOW
NUMBERCall Seller

1996 Mack RD688S Front Axle Assembly

$1,800 USD

20K FRONT BEAM DUAL STEERING 6 SPOKE HUB

Condition	Used
Fits To Make(s)	MACK
Fits To Model(s)	RD688S
Stock Number	1601
MLS Number	10569734
Category	Axle Assemblies, Front
Last Updated	2/8/2025
Location	Morrisville, NY, US
Sold By	Dutcher's Inc.

(855) 624-___ SHOW
NUMBERCall Seller

1997 Mack RD688S Front Axle Assembly

Contact for price

SPINDLES OK,, Capacity: 18,000LBS, Axle Make: MACK

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	RD688S
Will Fit Year(s)	1997
Capacity	18,000LBS
Stock Number	1515-MACK-2
MLS Number	13338787
Category	Axle Assemblies, Front
Last Updated	3/7/2025
Location	STURGEON COUNTY, AB, Canada
Sold By	Badger Truck Parts Ltd.

(833) 359-___ SHOW
NUMBERCall Seller

1994 Mack RD688S Front Axle Assembly

$2,000 USD

USED MACK FRONT STEERING AXLE BEAM OUT OF A RD688S-# 3QH482AP4/18/20,000LB

Condition	Used
Fits To Make(s)	MACK
Fits To Model(s)	RD688S
Stock Number	93861
MLS Number	12837758
Category	Axle Assemblies, Front
Last Updated	12/21/2024
Location	Crandall, TX, US
Sold By	Tim Jordan's Truck Parts Inc.