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1992 Peterbilt 378

1992 Peterbilt 378 Shock Absorber and Strut Assemblies

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Rear, Driver or Passenger Side Shock Sold individually
Part Number: F347303
Guaranteed to Fit
$32.49
Vehicle Fitment
  • 1992 Peterbilt 378 All Submodels All Engines With Chalmers 46,000 Lb. Rear Suspension; Oem# : 665174, 800670
Product Details
Location : Rear, Driver or Passenger SideType : ShockCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWarranty : Lifetime FCS limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Rear, Driver or Passenger Side GR-2/Excel-G Series Shock Sold individually
Part Number: KY341620
Guaranteed to Fit
$69.99
Vehicle Fitment
  • 1992 Peterbilt 378 Base 6 Cyl 12.7L with Low Air Leaf Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 14.0L with Low Air Leaf Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 14.6L with Low Air Leaf Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 10.5L with Low Air Leaf Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 10.0L with Low Air Leaf Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 10.3L with Low Air Leaf Suspension
Product Details
Location : Rear, Driver or Passenger SideType : ShockCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementDamping Type : Non-adjustableProduct Fit : Direct FitWarranty : Lifetime KYB limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : GR-2/Excel-G Series
Gas-Magnum 65 Series Shock Sold individually
Part Number: TS65433
Guaranteed to Fit
$82.99
Vehicle Fitment
  • 1992 Peterbilt 378 Base 6 Cyl 10.3L With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 10.5L With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 10.0L With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 12.7L With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 14.0L With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 14.6L With 40,000 Lb. Chalmers Suspension
Product Details
Location : Rear, Driver or Passenger SideType : ShockCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementDamping Type : Non-adjustableProduct Fit : Direct FitExtended Length : 20.61 in. Extended LengthDamper Travel : 7.02 in. Damper TravelReplaces OE Number : 10148, 665174, 665265, 90044083, 57366636, AMS650433, RCSA3127, 6026, L57661, 90044915, 90045083, NW90044979, 57365433, 85326, 1083204, 600130MT, 665267, AMS600130, 2096001, 537524C91, 6877, 3197642, L59030, SA3127, 727604, 661130, E85029, 434236, 83204, 90044642, 59024, 650433MT, 90044681, AMS660130, 315423, E83204, 925337, 728631, 16335, 665109, M85060, 57306895, 4940610, B461725, B23316, 438031, 317964, 557013, 601130, L57649, 680570, 3043, 341628, B462092, 85910, 3178165, 65433, 3166287Interchange Part Number : 10148, 665174, 665265, 90044083, 57366636, AMS650433, RCSA3127, 6026, L57661, 90044915, 90045083, NW90044979, 57365433, 85326, 1083204, 600130MT, 665267, AMS600130, 2096001, 537524C91, 6877, 3197642, L59030, SA3127, 727604, 661130, E85029, 434236, 83204, 90044642, 59024, 650433MT, 90044681, AMS660130, 315423, E83204, 925337, 728631, 16335, 665109, M85060, 57306895, 4940610, B461725, B23316, 438031, 317964, 557013, 601130, L57649, 680570, 3043, 341628, B462092, 85910, 3178165, 65433, 3166287Warranty : Lifetime Monroe limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Gas-Magnum 65 SeriesCompressed Length : 13.59 in. Compressed Length
Gas-Magnum 65 Series Shock Set of 2
Part Number: SET-TS65433-2
Guaranteed to Fit
$182.49
Vehicle Fitment
  • 1992 Peterbilt 378 All Submodels All Engines Shocks are 1.75 in Bore, Chalmers 40,000 lb Rear Suspension, Replaces OE #(s) 665174
Product Details
Location : Rear, Driver or Passenger SideComponents : (2) Shock AbsorberType : ShockCondition : NewQuantity Sold : Set of 2Recommended Use : OE ReplacementDamping Type : Non-adjustableProduct Fit : Direct FitExtended Length : 20.61 in. Extended LengthDamper Travel : 7.02 in. Damper TravelReplaces OE Number : 10148, 665174, 665265, 90044083, 57366636, AMS650433, RCSA3127, 6026, L57661, 90044915, 90045083, NW90044979, 57365433, 85326, 1083204, 600130MT, 665267, AMS600130, 2096001, 537524C91, 6877, 3197642, L59030, SA3127, 727604, 661130, E85029, 434236, 83204, 90044642, 59024, 650433MT, 90044681, AMS660130, 315423, E83204, 925337, 728631, 16335, 665109, M85060, 57306895, 4940610, B461725, B23316, 438031, 317964, 557013, 601130, L57649, 680570, 3043, 341628, B462092, 85910, 3178165, 65433, 3166287Interchange Part Number : 10148, 665174, 665265, 90044083, 57366636, AMS650433, RCSA3127, 6026, L57661, 90044915, 90045083, NW90044979, 57365433, 85326, 1083204, 600130MT, 665267, AMS600130, 2096001, 537524C91, 6877, 3197642, L59030, SA3127, 727604, 661130, E85029, 434236, 83204, 90044642, 59024, 650433MT, 90044681, AMS660130, 315423, E83204, 925337, 728631, 16335, 665109, M85060, 57306895, 4940610, B461725, B23316, 438031, 317964, 557013, 601130, L57649, 680570, 3043, 341628, B462092, 85910, 3178165, 65433, 3166287Warranty : Lifetime Monroe limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Gas-Magnum 65 SeriesCompressed Length : 13.59 in. Compressed Length
Magnum Series Shock Sold individually
Part Number: TS66636
Guaranteed to Fit
$47.99
Vehicle Fitment
  • 1992 Peterbilt 378 Base 6 Cyl 10.3L Replaces OE # 665174, With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 10.5L Replaces OE # 665174, With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 10.0L Replaces OE # 665174, With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 12.7L Replaces OE # 665174, With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 14.0L Replaces OE # 665174, With 40,000 Lb. Chalmers Suspension
  • 1992 Peterbilt 378 Base 6 Cyl 14.6L Replaces OE # 665174, With 40,000 Lb. Chalmers Suspension
Product Details
Location : Rear, Driver or Passenger SideType : ShockCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementDamping Type : Non-adjustableDesign : Twin-tubeColor Finish : YellowProduct Fit : Direct FitCollapsed Length : 13.38 in. Collapsed LengthExtended Length : 20 in. Extended LengthReplaces OE Number : 10148, 665174, 665265, 90044083, 57366636, M83127, AMS650433, RCSA3127, 6026, L57661, 90044915, 90045083, NW90044979, 57365433, 85326, 345608, 1083204, 600130MT, 665267, AMS600130, 2096001, 537524C91, 6877, 90044642, 3197642, L59030, SA3127, 727604, 661130, E85029, 434236, 83204, 59024, 650433MT, 90044681, AMS660130, E83204, 728631, 16335, 665109, 8150371, 57306895, 4940610, B23316, 438031, 317964, 601130, L57649, 680570, 3043, 341628, S2212, 85910, 3178165, 78530771, 83127, 3166287, 5521698Interchange Part Number : JP28030004, 10148, 665174, 665265, 90044083, 57366636, M83127, AMS650433, RCSA3127, 6026, L57661, 90044915, 90045083, NW90044979, 57365433, 85326, 345608, 1083204, 600130MT, 665267, AMS600130, 2096001, 537524C91, 6877, 90044642, 3197642, L59030, SA3127, 727604, 661130, E85029, 434236, 83204, 59024, 650433MT, 90044681, AMS660130, E83204, 728631, 16335, 665109, 8150371, 57306895, 4940610, B23316, 438031, 317964, 601130, L57649, 680570, 3043, 341628, S2212, 85910, 3178165, 78530771, 83127, 3166287Lower Mount Style : Loop Lower Mount StyleUpper Mount Style : Loop Upper Mount StyleWarranty : Lifetime Monroe limited warrantyGas Charged : Gas ChargedProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Magnum Series
Magnum Series Shock Set of 2
Part Number: SET-TS66636-2
Guaranteed to Fit
$90.99
Vehicle Fitment
  • 1992 Peterbilt 378 All Submodels All Engines Shocks are 1.38 in Bore, Chalmers 40,000 lb Rear Suspension, Replaces OE #(s) 665174
Product Details
Location : Rear, Driver or Passenger SideComponents : (2) Shock AbsorberType : ShockCondition : NewQuantity Sold : Set of 2Recommended Use : OE ReplacementDamping Type : Non-adjustableDesign : Twin-tubeColor Finish : YellowProduct Fit : Direct FitCollapsed Length : 13.38 in. Collapsed LengthExtended Length : 20 in. Extended LengthReplaces OE Number : 10148, 665174, 665265, 90044083, 57366636, M83127, AMS650433, RCSA3127, 6026, L57661, 90044915, 90045083, NW90044979, 57365433, 85326, 345608, 1083204, 600130MT, 665267, AMS600130, 2096001, 537524C91, 6877, 90044642, 3197642, L59030, SA3127, 727604, 661130, E85029, 434236, 83204, 59024, 650433MT, 90044681, AMS660130, E83204, 728631, 16335, 665109, 8150371, 57306895, 4940610, B23316, 438031, 317964, 601130, L57649, 680570, 3043, 341628, S2212, 85910, 3178165, 78530771, 83127, 3166287, 5521698Interchange Part Number : JP28030004, 10148, 665174, 665265, 90044083, 57366636, M83127, AMS650433, RCSA3127, 6026, L57661, 90044915, 90045083, NW90044979, 57365433, 85326, 345608, 1083204, 600130MT, 665267, AMS600130, 2096001, 537524C91, 6877, 90044642, 3197642, L59030, SA3127, 727604, 661130, E85029, 434236, 83204, 59024, 650433MT, 90044681, AMS660130, E83204, 728631, 16335, 665109, 8150371, 57306895, 4940610, B23316, 438031, 317964, 601130, L57649, 680570, 3043, 341628, S2212, 85910, 3178165, 78530771, 83127, 3166287Lower Mount Style : Loop Lower Mount StyleUpper Mount Style : Loop Upper Mount StyleWarranty : Lifetime Monroe limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Magnum Series
Universal, RS999012, 9-way Adjustable, Compressed Length 19.4in. Extended Length 32.3in, 12.8in. Travel, 16in. Body Length, Sold Individually
Part Number: R38RS999012
Universal Fit
$132.49
Product Details
Notes : Lower Loop Bushing Mount - 5/8" Bushing ID X 1.5/16" Bushing OAL; Upper Loop Bushing Mount - 5/8" Bushing ID X 1.5/16" Bushing OALType : ShockCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE UpgradeDamping Type : AdjustableProduct Fit : UniversalExtended Length : 32.3 in. Extended LengthDamper Travel : 12.88 in. Damper TravelBody Length : 16.23 in. Body LengthWarranty : Lifetime Rancho limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : RS9000XL SeriesCompressed Length : 19.41 in. Compressed Length
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Product Questions & Answers

Q:Are the front and rear shocks for 1999 Peterbilt 379 the same size?
Paul G.
A:BEST ANSWERHi Paul, thank you for reaching out. No, these are specific to the rear. We do not have front shocks available for that vehicle. You can click the link below to order this shock while stocks last. Have a good one! https://www.carparts.com/shock-absorber-and-strut-assembly/monroe/ts66636?can=cpab2020_csqa_20230614 Show less
Andrew B.
 
1 Question, 1 AnswerView all Q&As >
Q:What size mounting bolts and length from mounting eye to mounting eye when compressed properly? Show Less
Craig T.
A:BEST ANSWERHello! Collapsed length is 19.375 in. and mounting bolt size is 5/8 in. Show less
Mitchell D.
 
4 Questions, 1 AnswerView all Q&As >

Helpful Automotive Resources

Do You Need an Alignment After Replacing Shocks and Struts?
Do You Need an Alignment After Replacing Shocks and Struts?There are many different suspension designs in use today. Most modern cars use either a MacPherson strut or a modified strut front suspension (some also have struts in the rear).
5 Symptoms of Bad Shock Absorbers
5 Symptoms of Bad Shock AbsorbersAnd when your shock absorbers go bad, you’re definitely bound to notice. But just in case you don’t know what to look for, we’ll discuss some of the most common signs of faulty or failing shock absorbers. .kadence-column1294_de3f8d-4d > .kt-inside-inner-col,.kadence-column1294_de3f8d-4d > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1294_de3f8d-4d > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1294_de3f8d-4d > .kt-inside-inner-col{flex-direction:column;}.kadence-column1294_de3f8d-4d > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column1294_de3f8d-4d
Bad Strut Symptoms
Bad Strut SymptomsMany vehicles have a MacPherson strut-style suspension. With this design, there’s a type of shock absorber, called a MacPherson strut, behind each wheel. Each strut is integrated into a single assembly with one of the vehicle’s coil springs.