Auxiliary hydraulic kits extend a tractor’s versatility by adding extra outlets, boosting flow, and enabling seamless use of implements such as loaders, plows, and hydraulic resevoirs. This article highlights five well-regarded kits designed for common John Deere, Ford/New Holland, Kubota, and other tractor models. Each option emphasizes reliability, ease of installation, and compatibility with standard hydraulic systems. Read on to compare capabilities, fitment notes, and what to consider before purchasing to ensure you choose the right auxiliary hydraulic kit for your needs.
| Product | Brand | Key Feature | Compatibility Note |
|---|---|---|---|
| AR71331 Auxiliary Hydraulic Power Beyond Kit | Generic | 26 Piece Kit; 1 Year Warranty | John Deere models listed in name |
| RAParts AR71331 New Auxiliary Hydraulic Outlet Kit | Reliable Aftermarket Parts | New aftermarket replacement; comprehensive fitment | 4030, 4050, 4055, 4230, 4240, 4250, 4255, 4430, 4440, 4450, 4455, 4560, 4630, 4640 |
| Complete Tractor 1101-1049 Hydraulic Lift Repair Kit | Complete Tractor | Hydraulic lift repair compatible with Ford/New Holland 2N/8N/9N family | Classic Ford/New Holland tractors |
| Hydraulic Multiplier Kit – SCV Splitter | E-cowlboy | 2 circuits; 3000 PSI; no welding needed | John Deere, Case, Kubota, Ford ISO systems |
| JailBreakYourTractor Pressure Boost Kit | JailbreakYourTractor | Gauge included; +25% pressure boost | Kubota BX/LX and newer B series |
This selection emphasizes coverage across popular brands and tractor generations, focusing on kits that are straightforward to install, widely compatible, and supported by visible attachment options. The following sections provide concise details for each option, including what the kit offers, fitment guidance, and installation considerations to help you decide which kit best fits your tractor’s hydraulic system and your planned attachments.
AR71331 Auxiliary Hydraulic Power Beyond Kit

The AR71331 kit covers a broad range of John Deere tractors and includes a 26-piece assembly with a one-year warranty. This configuration is designed to add multiple hydraulic outlets, allowing enhanced control when operating implements that require additional hydraulic circuits. The kit’s breadth suggests compatibility with late-models and certain classic tractors, though precise fitment should be confirmed against model-specific diagrams or dealer guidance. Installation may involve mounting the manifold, routing hoses, and securing connectors in exposed or protected farm-use environments. The warranty provides reassurance against manufacturing defects during typical field use.
RAParts AR71331 New Auxiliary Hydraulic Outlet Kit

RAParts offers a new aftermarket replacement kit with comprehensive fitment for John Deere models including 4030 through 4640 families. It replaces the AR71331 number and is positioned as a direct replacement to provide additional hydraulic outlets for implements. Expect standard outlets and hoses, with attention to matching fittings and mounting points to your tractor’s rear hydraulic system. This option can simplify upgrading or restoring an older machine that needs reliable, factory-like auxiliary capabilities without overhauling the entire hydraulic manifold.
Complete Tractor Hydraulic Lift Repair Kit

This hydraulic lift repair kit is designed for Ford/New Holland 2N, 8N, 9N series tractors and related models. It includes components to replace worn piston seals and O-rings, supporting reliable lift performance and smoother operation of auxiliary hydraulics. When installing on classic tractors, verify compatibility with OEM numbers such as 9N510D, LCRK928, and NAA530B to ensure a correct fit. The kit emphasizes kit-level refurbishment rather than introducing new circuits, which can be ideal for owners looking to restore original lift function while expanding hydraulic capability with other aftermarket additions.
Hydraulic Multiplier Kit – SCV Splitter by E-cowlboy

The E-cowlboy SCV Splitter Kit provides 2 independent hydraulic circuits by converting a single output into two streams without welding or adapters. It is designed for ISO systems and claims compatibility with John Deere, Case, Kubota, and Ford tractors. The kit includes a 3000 PSI hydraulic multiplier with CNC-machined steel valves to withstand higher pressures. This solution is useful for operators who want to run additional implements from a single rear remote, ensuring each circuit maintains stable pressure and flow characteristics while reducing the risk of overloading one line.
JailBreakYourTractor Pressure Boost Kit

The JailBreakYourTractor kit focuses on Kubota BX/LX and newer B-series tractors, featuring a stainless steel liquid-filled pressure gauge for monitoring hydraulic pressure across seasons. A dedicated support line is highlighted, which can be valuable for owners who want direct guidance during installation and periodic checks. The kit’s emphasis on gauge feedback and a +25% boost makes it a practical upgrade for operators seeking improved performance with compatible Kubota models, especially when lifting or digging tasks demand greater hydraulic responsiveness.
Buying Guide: Key Considerations For Selecting An Auxiliary Hydraulic Kit
When choosing an auxiliary hydraulic kit for a tractor, consider fitment accuracy, hydraulic pressure requirements, and installation complexity. Start by confirming model compatibility—some kits are designed for specific lines on John Deere or Ford/New Holland tractors, while others aim for broader ISO-system compatibility. Consider how many additional outlets you need and whether you require independent circuits or shared pressure. Assess the operating pressure of your hydraulic system and ensure the kit’s maximum PSI aligns with your rating to prevent leaks or failures. Look for components with durable seals, corrosion resistance, and manufacturer support or warranties. Finally, evaluate installation steps, required tools, and whether the kit can be installed with existing implements in place, or if a professional installation is preferred.
Different users prioritize different outcomes. If you need multiple new outlets with a straightforward install, a full auxiliary kit may be best. If your goal is to maximize circuit independence for simultaneous implements, a splitter or multiplier that creates two circuits can be advantageous. For older tractors, a lift repair kit that restores original performance can complement a downstream hydraulic upgrade. Consider the total cost of ownership, including potential maintenance, to ensure long-term reliability on the farm.