The Monroe® Magnum® Suspension Shock Absorber for class 3-6 vehicles is gas-charged for quicker response and a stable, more comfortable ride. Designed for high mileage and severe use vehicles, it replaces worn units to help reduce excessive vibration.

Engineered for semi-trailer air suspension systems from Hendrickson and SAF Holland, the Magnum delivers consistent damping performance and all-weather durability, backed by Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.

• For Hardworking Commercial Vehicles: Designed for high mileage and severe use class 3-6 trucks and buses.
• Consistent Ride: All-weather fluid with special additives handles extreme temperatures; 2-in. or 2-1/4-in. reserve tube holds more fluid (when required).
• Exceptional Handling: 10-Stage valving tuned per vehicle; larger 1-3/8-in. bore for more efficient damping and a smoother ride (most applications).
• Strong and Durable: Shouldered and bonded bushing with sleeve prevents bushing walkout; arc welds up to 360° for durability.
• Built to Last: Hydraulic lock-out prevents over-extension of air bags and protects the seal assembly (most applications).
• Longer Service Life: PTFE-coated bearing and nitrocarburized piston rod for durability and extended service life (most applications).
• Reduced NVH: Isolates impact-related noise, vibration, and harshness under most driving conditions.
• Improves Performance: Nitrogen gas-charge maintains tire-to-road contact by reducing aeration and shock fade.
• Buy with Confidence: Comes with Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.

Common Fits: Semi-trailer air suspensions including Hendrickson HC190T, HC190U, HC230, HF190T, HS190T; SAF Holland AR41 Series, AR45, AR45-1, AR50-US, AR50-US-F, AR50-US-F-1, AR50-US-F-2, AR51-US, ARL20-D, ARL20-D-US (all rear, air spring). All fitments are rear position.

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Cross References:
Holland: 90044162, Holland: 90045298, Neway: 90044162, Hendrickson: S24088, Watson & Chalin: 10147HD, Monroe Shocks & Struts: 16616, Sachs: 315411, Volvo GM Heavy Truck: 3919570, Hendrickson: 520001, Neway: 57306608, Neway: 57365419, Mack: 600167, Monroe Shocks & Struts: 600167, Mack: 600167MT, Monroe Shocks & Struts: 601167, Gabriel: 654907, Gabriel: 654951, Gabriel: 65911, Monroe Shocks & Struts: 660167, Monroe Shocks & Struts: 6608, Meritor: 665724, Gabriel: 665746, Gabriel: 665761, NAPA Shocks: 66608, Gabriel: 671948, Reyco Granning: 70009801, Monroe Shocks & Struts: 70623, Gold Shock Absorber: 8150242, Gold Shock Absorber: 8180262, Gabriel: 83128, Gabriel: 83389, Gabriel: 85000, Koni: 881490, Koni: 881644, Gabriel: 89436, Freightliner: 90044162, Neway: 90044685, Neway: 90045298, Neway: 90045337, Neway: 90045564, Gold Shock Absorber: 9180136, PRT HD: 925251, Hendrickson: A20001, Utility Trailer Manufacturing: A20001, Automann: A83128, Hendrickson: B23361, Hendrickson: B24088, Hendrickson: B26652, Cush Suspensions: C0062D, Cush Suspensions: C0078, FCS: F347217, FCS: F347352, Bulldog HD: HD12140500, Stoughton Trailers: HTA200001, Dayton Parts: M66608, Meritor: M83128, Meritor: M83203, Euclid: M85000, Meritor: M89436, Stoughton Trailers: NW90044162, Volvo GM Heavy Truck: RCSA3128, Volvo GM Heavy Truck: RCSA5000, Hendrickson: S20001, Hendrickson: S23361, Hendrickson: S26652, Volvo GM Heavy Truck: SA3128, Road Choice: SA3128, Volvo GM Heavy Truck: SA5000, Road Choice: SA5000, Haldex: SA66608, Alliance Truck Parts: ABPN32G900015, Alliance Truck Parts: ABPN32O900015, Hendrickson: M66608, Dayton Parts: 44183128, Alliance Parts: ABPN32G900015, Alliance Parts: ABPN32O900015, 66608

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UPC:

048598074638

Mfr Part Number:

66608

Country of origin (CO):

US

Color:

Black

Compressed Length:

11.6875 (unece.unit.INH)

Cylinder Color:

Black

Cylinder Finish:

Painted

Dust Shield Included:

Yes

Dust Shield Material:

Metal

Extended Length:

16.8281 (unece.unit.INH)

Gas Charged:

Yes

Grade Type:

Premium

Hydraulic Lockout:

Yes

Includes Bump Stop:

No

Internal Rebound Bumper:

No

Lower Mount Code:

LS54

Lower Mount Type:

Loop (Eyelet) Bushing and Sleeve

Mounting Hardware Included:

No

Shock Absorber Body End Measuring Point:

Center of Loop

Shock Absorber Rod End Measuring Point:

Center of Loop

Travel Length:

5.14 (unece.unit.INH)

Upper Mount Code:

LS54

Lower Mount Code48:

LS54

Upper Mount Code74:

LS54

Lower Mount Type49:

Loop Bushing and Sleeve Mount - 3/4" Sleeve ID X 1.3/4" Sleeve OAL

Upper Mount Type75:

Loop Bushing and Sleeve Mount - 3/4" Sleeve ID X 1.3/4" Sleeve OAL