The ROP Shop OEM AR 2600 psi Power Pressure Washer vs The ROP Shop OEM AR Annovi Reverberi: Spec Comparison
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You are comparing the rop shop oem ar 2600 psi power pressure washer vs oem ar annovi to find the right replacement pump. Both units are vertical gas-driven pumps with a 2.2 GPM flow rate and 7/8" shaft size. They share similar inlet and outlet dimensions. The main difference lies in their maximum pressure rating and outlet orientation. One offers higher pressure, while the other provides a front-facing design. You need to match these specs to your engine and mounting needs.
Key differences
| Aspect | The ROP Shop 2600 PSI Vertical Replacement Pump | The ROP Shop 2400 PSI Gas Pump |
|---|---|---|
| Maximum Pressure | 2600 PSI | 2400 PSI |
| Outlet Orientation | Rear-Facing (Left-Handed) | Front-Facing (Right-Handed) |
| Oil Capacity | 2.29 oz | 2.2 oz |
| Weight | 5 pounds | not listed |
| Color | Clear | Gray |
Which one should you choose?
Choose The ROP Shop 2600 PSI Vertical Replacement Pump if
- You need the higher 2600 PSI pressure rating for tougher cleaning tasks.
- Your existing setup requires a rear-facing outlet connection.
- You want a slightly larger oil capacity of 2.29 oz.
Choose The ROP Shop 2400 PSI Gas Pump if
- You require a front-facing outlet to match your current hose routing.
- You are replacing an Annovi Reverberi RMW22G24-EZ model directly.
- You prefer a gray finish for the pump body.
Verdict: Choose the 2600 PSI model if you need maximum cleaning power and have a rear-facing configuration. Select the 2400 PSI front-facing unit if your machine uses that specific outlet orientation or if you are replacing an Annovi Reverberi RMW22G24-EZ pump directly. Both share the same flow rate and shaft size, so fitment depends on your outlet and pressure needs.
ROP Shop Pump Specs Compared
Maximum Pressure
The ROP Shop OEM AR 2600 psi Power Pressure Washer Water Pump delivers a higher maximum pressure rating of 2600 PSI. This unit is designed for vertical gas engine driven units with at least 5HP. The competing model, The ROP Shop OEM AR Annovi Reverberi, offers a maximum pressure of 2400 PSI. It mounts to most 7/8" diameter shaft vertical gas engines in the 4-7 HP range. If you need the extra cleaning power from higher pressure, the 2600 PSI model has the advantage. However, both pumps exceed standard residential cleaning needs, so the difference may not impact every task.
Flow Rate
Both pressure washer pumps share the same maximum flow rate of 2.2 GPM. This consistency means you will get similar rinse speeds and cleaning coverage regardless of which pump you choose. The flow rate is a critical factor for how quickly water moves over dirt and grime. Since both units provide 2.2 GPM, neither has a performance advantage in terms of volume. You can expect identical water delivery rates for washing decks, vehicles, or siding. This spec is a tie between the two options.
Pump Orientation
The physical orientation of the pump outlet differs between the two models. The ROP Shop OEM AR 2600 psi Power Pressure Washer Water Pump is an EZ-SX Rear-Facing (Left-Handed) pump. Its outlet is positioned at the back. In contrast, The ROP Shop OEM AR Annovi Reverberi is described as Front-Facing or Right-Handed (Non SX). This difference is crucial for compatibility with your existing hose routing and engine setup. You must match the orientation to your current configuration. The 2600 PSI model is rear-facing, while the 2400 PSI model is front-facing.
Oil Capacity
The oil capacity for the internal lubrication system varies slightly between the two pumps. The ROP Shop OEM AR 2600 psi Power Pressure Washer Water Pump holds 2.29 ounces of oil. The ROP Shop OEM AR Annovi Reverberi holds 2.2 ounces of oil. This difference is minimal and unlikely to affect maintenance schedules significantly. Both capacities are sufficient for the vertical gas engine applications these pumps serve. You will need to check the oil level regularly regardless of the specific capacity. This is a tie with negligible practical impact.
Included Features
Both pumps come with essential integrated features for operation and safety. Each unit includes a thermal release valve and a chemical injector, installed directly on the pump. The ROP Shop OEM AR Annovi Reverberi also explicitly mentions a built-in pressure control valve and an EZ start valve. These additional controls may offer slightly more convenience for startup and pressure management. The 2600 PSI model lists the thermal release valve and chemical injector but does not explicitly detail the pressure control or EZ start valves in the same way. The Annovi model has a slight edge due to these listed features.
Which ROP Shop Pump Should You Buy
Owner of 5HP or larger Troy-Bilt unit
This pump is rated for engines with at least 5HP. It delivers 2600 PSI, which is higher than the competing model. The vertical design with a rear-facing outlet fits your specific engine mount. Ensure your engine meets the power requirement for proper operation and longevity.
Owner of 4 to 7HP Briggs or Craftsman
This model is designed for vertical gas engines in the 4-7 HP range. It includes a built-in pressure control valve and EZ start valve. The front-facing outlet suits many standard mounts. It is compatible with various brands like Briggs & Stratton and Craftsman for easy replacement.
User needing higher pressure output
If you require more cleaning power, this pump offers 2600 PSI maximum pressure. The flow rate remains 2.2 GPM, matching the other option. The higher pressure rating helps remove stubborn dirt from decks and driveways. Verify your engine can handle the load before installation.
User preferring front-facing outlet configuration
This pump features a front-facing outlet, which differs from the rear-facing design of the other model. It includes a chemical injector and thermal relief valve. The gray finish and compact dimensions fit many standard pressure washer frames. Check your hose routing needs before choosing this configuration.
The products compared
The ROP Shop 2600 PSI Vertical Replacement Pump
Best for: vertical engines needing a rear-facing replacement pump
- Maximum Pressure
- 2600 PSI
- Flow Rate
- 2.2 GPM
- Dimensions
- 13 × 8 × 8 inches
- Weight
- 5 pounds
View on Amazon: The ROP Shop 2600 PSI Vertical Replacement Pump Affiliate link
This vertical replacement water pump delivers up to 2600 PSI and a flow rate of 2.2 GPM. Designed for vertical gas engines with a 7/8-inch shaft, it features a rear-facing outlet orientation and built-in thermal release and chemical injector valves. You get a direct replacement unit suited for residential pressure washers powered by at least 5 horsepower engines.
Pros
- Maximum pressure rating of 2600 PSI with a 2.2 GPM flow rate
- Includes pre-installed thermal release valve and chemical injector
- Fits standard 7/8-inch diameter vertical engine shafts
- Standard 3/4-inch GHA inlet and 22mm x 14mm outlet connections
Cons
- Rear-facing outlet layout does not fit front- or right-facing configurations
- Requires a vertical gas engine with at least 5 horsepower
Good fit if
- You need a replacement pump with a rear-facing outlet for a vertical shaft engine.
- Your pressure washer engine has a 7/8-inch shaft and produces at least 5 horsepower.
Skip if
- You need a front-facing or right-handed pump outlet orientation.
- Your machine requires higher output than 2600 PSI or 2.2 GPM.
Verdict: The ROP Shop AR 2600 PSI Vertical Water Pump fits homeowners replacing a worn pump on a vertical gas pressure washer with a rear-exit hose setup. It restores factory output specifications for vertical engines rated at 5 horsepower or higher.
The ROP Shop 2400 PSI Gas Pump
Best for: 4 to 7 HP vertical gas engines
- Maximum Pressure
- 2400 PSI
- Flow Rate
- 2.2 GPM
- Power Source
- Gas
- Color
- Gray
- Dimensions
- 13 × 8.13 × 8 inches
View on Amazon: The ROP Shop 2400 PSI Gas Pump Affiliate link
This replacement vertical pressure washer pump delivers up to 2400 PSI and a flow rate of 2.2 GPM. Designed for 4 to 7 HP gas engines with a 7/8-inch shaft, it includes an EZ start valve and built-in thermal relief. You get a direct-fit replacement if your pressure washer requires a front-facing orientation at moderate output.
Pros
- Delivers up to 2400 PSI at 2.2 GPM flow rate
- Fits standard 7/8-inch vertical shafts on 4 to 7 HP engines
- Includes pre-installed thermal release valve and chemical injector
- Built-in EZ start valve reduces pull-cord resistance
Cons
- Maximum output of 2400 PSI is lower than 2600 PSI models
- Pump may require removal from the engine to change motor oil
- Fluid temperature is limited to a maximum of 140° F
Good fit if
- You have a 4 to 7 HP gas engine with a 7/8-inch vertical drive shaft.
- You need a pump operating at 2400 PSI and up to 2.2 GPM.
- You require front-facing inlet and outlet connections.
Skip if
- You require 2600 PSI or higher for heavy cleaning tasks.
- You run an engine with a shaft diameter other than 7/8 inch.
Verdict: The ROP Shop AR 2400 PSI Vertical Pump supplies 2.2 GPM for 4 to 7 HP vertical gas engines needing front-facing ports. It suits owners replacing a worn factory unit who do not need 2600 PSI output.
Specifications side by side
| Spec | The ROP Shop 2600 PSI Vertical Replacement Pump | The ROP Shop 2400 PSI Gas Pump |
|---|---|---|
| Maximum Pressure | 2600 PSI | 2400 PSI |
| Flow Rate | 2.2 GPM | 2.2 GPM |
| Power Source | not stated | Gas |
| Pressure | 2600 PSI | not stated |
| Color | Clear | Gray |
| Dimensions | 13 × 8 × 8 inches | 13 × 8.13 × 8 inches |
| Weight | 5 pounds | not stated |
| Model | AR 2600 | RMW22G24-EZ |
| Size | not stated | Front Facing |
Frequently asked questions
Is the ROP Shop OEM AR 2600 PSI pump compatible with Troy-Bilt units?
Yes, this pump is designed as a direct replacement for specific Troy-Bilt models. It fits vertical gas engines with a 7/8 inch shaft. You should choose this unit if you need a rear-facing pump with a chemical injector. It is optimized for engines with at least 5HP.
What are the dimensions of the ROP Shop 2600 PSI vertical replacement pump?
The pump measures 13 inches in length, 8 inches in width, and 8 inches in height. It weighs 5 pounds. These compact dimensions allow for easy installation in tight spaces. The clear color helps you monitor internal conditions during operation.
Does the ROP Shop 2600 PSI pump have a chemical injector?
Yes, this model includes a chemical injector. This feature allows you to apply detergents directly into the water stream. You can clean surfaces more effectively without switching tools. The rear-facing outlet design integrates this injector seamlessly into the pump assembly.
Can I use the ROP Shop 2400 PSI pump on a 4HP engine?
Yes, the 2400 PSI model suits users with 4-7 HP engines. It provides a reliable vertical replacement option. This unit prioritizes direct compatibility with Annovi Reverberi and Troy-Bilt models. You get steady performance without needing the higher pressure output of the 2600 PSI version.
What is the difference between the front-facing and rear-facing pump designs?
The 2600 PSI model features a rear-facing outlet, while the 2400 PSI model is front-facing. The rear-facing design includes a chemical injector for easier detergent application. The front-facing model offers a different mounting orientation. Choose based on your existing hose connections and injector needs.
How heavy is the ROP Shop OEM AR 2600 PSI pump?
The pump weighs 5 pounds. This lightweight design makes it easy to handle during installation. You can remove the old unit and install the new one without heavy lifting tools. The compact 8x8x13 inch footprint fits standard vertical gas engine configurations.

