Mack Suspensions
This is just a sample of the Mack suspension parts we carry in stock. Please call us and allow our specialists to insure that you find the exact replacement part for original equipment.
The Mack camel back suspension is another time-tested solution for a heavily loaded truck that must take the maximum abuse. Plaza’s inventory of parts below show the common components of four camel back models with 4” springs: SS34/38, SS44/SWS57, SS50, and SWS573.
The Camelback Suspension
Mack Camel Back Rear Tandem Suspension
| Mack pn | Description | Aftermarket pn | |
| 10QK276 | Atro Bushing, Urethane; 8 3/4'' Trunnion | Atro | MA10000 |
| 10QK36B | Atro urethane insulator, 1 3/4'' Dowel | Atro | MA36000 |
| 10QK370 | Atro urethane insulator, 1 3/4'' Dowel | Atro | MA37000 |
| 10QK365A | Atro urethane insulator, 1 3/4'' Dowel | Atro | MA36500 |
| 10QK388 | Atro urethane insulator, 1 3/4'' Dowel | Atro | MA36000 |
| 3AX1472 | Bolt Assembly; 1/2''-20 x 2 3/4''SHCS | Dayton | 334-1401 |
| 21AX798 | Bolt Assembly; 1/2''-20 x 2 3/4''SHCS | Dayton | 334-1401 |
| 3AX1525 | Bolt Assembly; 3/4''-16 x 5 1/2''Lg. | Dayton | 334-579 |
| 10QK219P,P1 | Bushing, 8 3/16'' Trunnion; 3.5 x 4 7/16 x 5 9/16 | Dayton | 325-117 |
| 10QK219P3 | Bushing, 8 3/4'' Trunnion; 3.5 x 4 7/16 x 6 5/16 | Dayton | 325-118 |
| 44695, 227720 | Bushing, Straddlemount; 2 3/4 x 4 3/8'' C/L to C/L | Dayton | 321-132 |
| 10QK276 | Bushing, Urethane; 8 3/4'' Trunnion | Dayton | 325-120 |
| 10QK157 | Bushing; 3 1/2''ID x 3 3/4''OD x 3 7/16''Lg. | Dayton | 322-114 |
| 10QK158A | Bushing; 4''ID x 4 1/4''OD x 4 1/4''Lg. | Dayton | 322-113 |
| 10QK153,392 | Bushing; 4''ID x 4 1/4''OD x 4 1/4''Lg. | Dayton | 322-113 |
| 10QK152 | Bushing; 5''ID x 5 1/4''OD x 4 5/16''Lg. | Dayton | 322-115 |
| 80AX560 | Bushing; 5''ID x 5 1/4''OD x 4 5/16''Lg. | Dayton | 322-115 |
| 4QK4005A | Camel Back 38-44000 lb 50"spacing, antisway | Dayton | 62-147 |
| 4QK497A | Camel Back spring 34000 lb 50" axle spacing | Dayton | 62-137 |
| 4QK4013 | Camel Back spring 34000 lb 50" spacing | Dayton | 62-173 |
| 4QK499A | Camel Back spring 34000 lb 50" spacing, antisway | Dayton | 62-139 |
| 4QK4001A | Camel Back spring 38000 lb 50" axle spacing | Dayton | 62-153 |
| 4QK4004A | Camel Back spring 38-44000 lb | Dayton | 62-143 |
| 4QK4108M | Camel Back spring 50,000 lb capacity | Dayton | 62-1287 |
| 97QL3001P3 | Cap, Trunnion; 6 5/8''ID x 8 1/2''OD x 1 1/2'' Deep | Dayton | 334-517 |
| 21AX655 | Deep Nut, 1 1/4''-12, Grade C | Dayton | DNM-200 |
| -- | Deep Nut, 1 1/4''-12, Grade C | Dayton | DNM-200 |
| 21AX131 | Deep Nut; 1 1/4''-12, Grade C | Dayton | DN-125 |
| 44AX115 | Fitting, Straight Zerk; 1/8''-27NPT | Dayton | 334-475 |
| 52QK418BP4 | Insulator Box; 6 3/4'' Deep | Dayton | 338-746 |
| 52QK418BP5 | Insulator Box; 6 3/8'' Deep | Dayton | 338-728 |
| 10QK372 | Insulator, 2'' Dowel, 70 Durometer | Dayton | 325-114 |
| 10QK48 | Insulator, Offset; 1 3/4'' Dowel | Dayton | 325-125 |
| 10QK32BP1 | Insulator, Standard; 1 1/2'' Dowel, 70 Durometer | Dayton | 325-108 |
| 10QK36B | Insulator, Standard; 1 3/4'' Dowel, 70 Durometer | Dayton | 325-110 |
| 10QK365A | Insulator; 1 3/4'' Dowel, 70 Durometer | Dayton | 325-112 |
| 10QK370 | Insulator; 1 3/4'' Dowel, 70 Durometer | Dayton | 325-113 |
| 21AX480 | Lock Nut; 7/8''-14 | Dayton | SLN-106 |
| -- | Lock Nut; 7/8''-14 | Dayton | SLN-106 |
| 25QJ223 | Nut, Adjusting; 3 5/16''-12 ID x 4''OD x 1''Thk. | Dayton | 334-441 |
| 25QJ220BP2 | Nut, Trunnion Shaft; 3 7/8''-12 x 6.09''OD x 1.18'' | Dayton | 334-498 |
| 8QK335P2 | Saddle, U-Bolt; 9 3/4''Lg. x 4''W | Dayton | 338-714 |
| 88AX446 | Seal, Collar; 4 3/8''ID x 5 1/2''OD x 9/16''Thk. | Dayton | 334-445 |
| 88AX253 | Seal; 5''ID X 6 3/8''OD x 9/16''Thk. | Dayton | 334-515 |
| 88AX459 | Seal; 5''ID X 6 3/8''OD x 9/16''Thk. | Dayton | 334-515 |
| 44RU2223P1 | Spacer, Inner; 3 1/2''ID x 4 1/8''OD x 1/2''Thk. | Dayton | 334-1178 |
| 44RU2223P2 | Spacer, Inner; 3 1/2''ID x 4 1/8''OD x 7/16''Thk. | Dayton | 334-480 |
| 44RU2221P2 | Spacer, Outer; 3 1/2''ID x 4 1/8''OD x 1 3/4'' | Dayton | 334-479 |
| 13QK246 | Spacer; 3''W x 4''Lg. x 1 1/2''Thk. | Dayton | 338-729 |
| 39QK325 | Trunnion Assembly | Dayton | 338-1845 |
| 39QK431 | Trunnion; Clamp Half | Dayton | 338-710 |
| 39QK433A | Trunnion; Seat Half | Dayton | 338-709 |
| 35AX1435 | U-Bolt Washer; 1 1/4'' | Dayton | SUW-125 |
| -- | U-Bolt Washer; 1 1/4'' | Dayton | SUW-125 |
| 23QJ112B | Washer, ''D''; 2 21/64''ID x 4 7/8''OD x 1/4''Thk. | Dayton | 334-442 |
| 43QK116 | Washer, Thrust; 3 1/2''ID x 5 5/16''OD x 1/4'' | Dayton | 334-443 |
| 43QK118 | Washer, Thrust; 4 1/32''ID x 6 1/4''OD x 5/16'' | Dayton | 334-512 |
| 43QK115 | Washer, Thrust; 4 1/32''ID x 6 13/16''OD x 1/4'' | Dayton | 334-511 |
| 43QK117 | Washer, Thrust; 4 3/8''ID x 5 3/8''OD x 3/8''Thk. | Dayton | 334-444 |
Mack Front Suspensions
| Mack pn | Description | Aftermarket pn | |
| 43RU297M | Bolt; M24 x 3.0 x 200mm | Dayton | 327-481 |
| 10QK254M | Bushing; 1 1/16''ID x 1 7/8''OD x 3 3/8''Lg. | Dayton | RB-189 |
| 10QK229P1 | Bushing; 1 1/4''ID x 1 1/2''OD x 3 1/2''Lg. | Dayton | RNI-BM |
| -- | Bushing; 1 1/4''ID x 1 1/2''OD x 3 1/2''Lg. | Dayton | RNI-BM |
| 10QK148A | Bushing; 1 3/4''OD x 3 1/2''Lg. x 1 3/8''-6 Thread | Dayton | TB-69 |
| 10QK253M | Bushing; 24mm ID x 48mm OD x 89mm Lg. | Dayton | RB-188 |
| 2QK3435M | leaf spring 3 1/2 x 55 5400 lbs | Dayton | 62-968 |
| 2QK3444M | leaf spring 3 1/2 x 55 6300 lbs | Dayton | 62-976 |
| 2QK3333 | leaf spring 3 1/2' X 55 1/2' 10000 LBS | Dayton | 62-812 |
| 2QK3413AP2 | leaf spring 3 1/2' X 55 1/2' 11500 LBS MULTILEAF | Dayton | 62-856 |
| 2QK3377 | leaf spring 3 1/2' X 55 1/2' 9200 LBS MULTILEAF | Dayton | 62-890 |
| 2QK3378P3 | leaf spring 3 1/2' X 55' 8100 LBS full taper | Dayton | 62-832 |
| 2QK3381A | leaf spring 3 1/2' X 55' 8100 LBS MULTILEAF | Dayton | 62-876 |
| 171AM8 | Nut, Lock; M24-3.0 | Dayton | 334-717 |
| -- | Shock Absorber | Gabriel | 85321 |
| -- | Shock Absorber | Gabriel | 83215 |
| -- | Shock Absorber | Gabriel | 85005 |
| -- | Shock Absorber | Gabriel | 85036 |
| -- | Shock Absorber | Gabriel | 85320 |
| 22QK39301 | Side Bar; 6 5/16x 4 C/C x 1 1/4, 1 1/16 Pin Holes | Dayton | 330-102 |
| 44QK25 | Spring Pin, Threaded; 1 3/8''-6 x 6 15/16''Lg. | Dayton | 327-330 |
| 44QK26A | Spring Pin, Threaded; 1 3/8''-6 x 6 9/16''Lg. | Dayton | 327-331 |
| 44QK29301B | Spring Pin, Threaded;1 3/8''-6 x 7 1/16''Lg. | Dayton | 327-346 |
| 44QK205M | Spring Pin, Threaded;1 3/8''-6 x 7 1/16''Lg. | Dayton | 327-346 |
| 44QK173B | Spring Pin; 1 1/4''OD x 6 1/4''Lg. x 3/4'' C/E | Dayton | 327-342 |
| 44QK19301B | Spring Pin; 1 1/4''OD x 7 1/16''Lg. x 1 1/16'' C/E | Dayton | 327-345 |
Proud of your Mack Truck? Take a minute to enjoy these pictures of your favorite truck.
Need to see the specs for other Mack Suspensions? These pages from the Dayton Parts catalogue outline all of Mack's own suspensions.
