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Mack RD688 Axles & Differentials For Sale

Browse Mack RD688 Axles & Differentials on MyLittleSalesman.com and compare listings with prices from $1,250 to $2,000. Sellers include CRG Heavy Truck Parts, Dutcher's, Holst Truck Parts, and more. Filter by condition, price, or year to quickly narrow down to the right Mack RD688.
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Truck Parts (14)
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Axles & Differentials (14)
   Axle Assemblies, Front (12)    King Pin Sets (1)    Spindles / Knuckles (1)
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Mack (14)
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Showing 1 - 14 of 14 Listings

1 - 14 of 14 listings
1 - 14 of 14 listings
Mack RD688S Front Axle Assembly

2001 Mack RD688S Front Axle Assembly

Newly Listed
$1,500 USD
(Used) 2001 Mack RD688S, COMPLETE FRONT AXLE BEAM- Make: Mack, Model: 3QHF545-P2, Capacity: 18,000 Lbs, Hub Bolts: 10, Brake Type: Drum, For more information about this item, give us a call....
ConditionUsed
Fits To Make(s)Mack
Fits To Model(s)RD688S
Will Fit Year(s)2001
Capacity18,000 lbs.
Part NumberTBD
Stock NumberP-56052
MLS Number14729464
CategoryAxle Assemblies, Front
Last Updated11/6/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
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CRG Heavy Truck Parts
Mack RD688SX Front Axle Assembly

2000 Mack RD688SX Front Axle Assembly

Newly Listed
Contact for price
(Used) 2000 Mack RD688SX, COMPLETE AXLE BEAM- Make: Mack, Model: 3QHF545-P2, Serial Number: 1QHAFA, Hub Bolts: 6 Brake Type: Drum, For more information about this item, give us a call.We...
ConditionUsed
Fits To Make(s)Mack
Fits To Model(s)RD688SX
Will Fit Year(s)2000
Stock NumberP-46351
MLS Number14729336
CategoryAxle Assemblies, Front
Last Updated11/6/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Mack RD688SX Front Axle Assembly

2000 Mack RD688SX Front Axle Assembly

Contact for price
(Used) 2000 Mack RD688SX, COMPLETE FRONT AXLE- Make: Mack, Model: 3QHF545-P2, Serial Number: 1QHAFA, Hub Bolts: 6 Brake Type: Drum, For more information about this item, give us a call.We...
ConditionUsed
Fits To Make(s)Mack
Fits To Model(s)RD688SX
Will Fit Year(s)2000
Stock NumberP-46345
MLS Number12019931
CategoryAxle Assemblies, Front
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
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CRG Heavy Truck Parts
Mack RD688S Left Spindle

2001 Mack RD688S Left Spindle

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(Used) 2001 Mack RD688S, COMPLETE SPINDLE KNUCKLE- Side: Driver Left Side, Material: Steel, Make: Mack, Model: 3QHF545-P2, Capacity: 18,000 Lbs, Hub Bolts: 10, Brake Type: Drum, For more...
ConditionUsed
Fits To Make(s)Mack
Fits To Model(s)RD688S
Will Fit Year(s)2001
SideLEFT
Capacity18,000 lbs.
Stock NumberP-56055
MLS Number12234344
CategorySpindles / Knuckles
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
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