| OPW 3640F-0302 Aluminum 3" Swivel Joint, ANSI Flanges | railyardsupply.com | 786 USD | 1,048 USD | −25% |
| 3458FSB-0402 4" Base Swivel Joint, Load Arm, Carbon Steel, ANSI x ANSI Flanges, OPW | railyardsupply.com | 2721.61 USD | 3,765.98 USD | −23.8% |
| 3458FFT-0402 4" Base Swivel Joint for Load Arm, Carbon Steel, ANSI x TTMA Flanges, OPW | railyardsupply.com | 2306 USD | 3,025.36 USD | −23.8% |
| 1004D3-0402 4" API Coupler, Bottom Truck Load Head Dry-Break Coupler, Fluorocarbon Seals, OPW | railyardsupply.com | 1920 USD | 2,461.54 USD | −22% |
| 1386-1386 Optic and Thermistor Overfill Prevention Rack-Control Monitor Testers OPW Engineered Systems | railyardsupply.com | 1575 USD | 2,013 USD | −21.8% |
| OPW 3655FTH-0402 Aluminum 4" Double Swivel Joint, TTMA Flanges, Boss Handle | railyardsupply.com | 1650 USD | 2,066 USD | −20.1% |
| OPW 3640FT-0402 Aluminum 4" Swivel Joint, TTMA Flanges | railyardsupply.com | 1172 USD | 1,444.32 USD | −18.9% |
| 1004D3SRK-0402 Fluorocarbon Seal Replacement Kits for 1004D3 Couplers | railyardsupply.com | 219 USD | 270 USD | −18.9% |
| 4" 3650F-0402 Swivel Joints, Cast Aluminum, 150 lb Flanges Both Ends, OPW | railyardsupply.com | 1780 USD | 1,823 USD | −2.4% |
| OPW AFPCA060UR0402 A-Frame 4 in. Bottom Truck Loading Arm | railyardsupply.com | 10878 USD | — | — |
| 1004D3-0402 4" API Coupler x 2" male Camlock Adapter, Bottom Truck Load Head Dry-Break Coupler | railyardsupply.com | 2355 USD | — | — |
| 1774DL-SS20 | trucktankparts.com | 1583.75 USD | — | — |
| OPW 3650F-0302 Aluminum 3" Double Swivel Joint, 150# Flanges | railyardsupply.com | 1390 USD | — | — |
| 1712DL-AL30 | trucktankparts.com | 1354.98 USD | — | — |
| OPW 3420F-0302 Steel 3" Swivel Joint, 150# Flanges | railyardsupply.com | 1199 USD | — | — |
| OPW Loading Arm Extended Piping Spools, 72" Length, TTMA Tank Truck Flanges both ends | railyardsupply.com | 950 USD | — | — |
| OPW 4" Loading Arm Aluminum Riser Pipe, 47" Length, TTMA x ANSI Flanges | railyardsupply.com | 865 USD | — | — |
| 1712ESL-AL20 | trucktankparts.com | 859.15 USD | — | — |
| OPW 4" Loading Arm Aluminum Drop Tube HX110770, 47" Length, TTMA Tank Truck Flanges both ends | railyardsupply.com | 825 USD | — | — |
| 1712DL-AL20 | trucktankparts.com | 688.17 USD | — | — |
| 3630-0302 | trucktankparts.com | 531.31 USD | — | — |
| 1612AN-AL30 | trucktankparts.com | 359.05 USD | — | — |
| 1712ERKL-0020 | trucktankparts.com | 297.96 USD | — | — |
| 1612AN-AL20 | trucktankparts.com | 205.16 USD | — | — |
| 1612ANRK-0030 | trucktankparts.com | 115.09 USD | — | — |
| C10310RAH | trucktankparts.com | 99.11 USD | — | — |
| 1612ANRK-0020 | trucktankparts.com | 63.91 USD | — | — |
| 3000RK-0302 | trucktankparts.com | 61.18 USD | — | — |
| 3000RK-0402 Replacement Seal Kits, Fluorocarbon, 4" Swivel Joints, OPW | railyardsupply.com | 60.68 USD | — | — |
| 3000RK-0302 Replacement Seal Kits, Fluorocarbon, 2.5"-3" Swivel Joints, OPW | railyardsupply.com | 59.64 USD | — | — |
| 733ARK-SS20 | trucktankparts.com | 51.53 USD | — | — |
| H00974M | trucktankparts.com | 50.63 USD | — | — |
| H10377M | trucktankparts.com | 36.26 USD | — | — |
| H20545M | trucktankparts.com | 8.81 USD | — | — |