2 Pack Gravely Zero Turn Mower Hydraulic Filter - Fit Pro Turn & ZT Models Review

Overview

This isn’t a lawn mower itself, but a critical maintenance component: the 2 Pack Gravely Zero Turn Mower Hydraulic Filter set, designed specifically for Pro Turn and ZT Series models. If you own a Gravely zero-turn and want to keep your hydrostatic transmission running smoothly for years, this filter pack is your ticket to avoiding costly repairs. Priced at $47.99 for two filters, it’s aimed at DIY-minded owners who prefer to handle their own fluid changes rather than paying dealer markups.

Who Should Buy This

1. Gravely Pro Turn and ZT Series Owners Who Mow 1+ Acres
If you’re putting serious hours on your machine—say, mowing 2–5 acres weekly—your hydraulic system works hard. These filters are a must for annual or bi-annual fluid changes to prevent pump wear.

2. Homeowners Who Do Their Own Maintenance
You don’t trust dealer service centers with your time or wallet. This 2-pack lets you stock up for two changes (or one change with a spare) and keep your mower running at peak efficiency without scheduling an appointment.

3. Fleet Managers or Landscapers with Multiple Gravely Units
If you maintain a small fleet of Pro Turns, this pack is a cost-effective way to keep several machines on the same maintenance schedule. The $47.99 price per two filters beats buying singles at most dealers.

4. Owners Who Want OEM-Quality Without the Stealership Hassle
These filters are designed to match Gravely’s original specs, so you’re not gambling with cheap aftermarket parts that might restrict flow or fail prematurely.

Key Features Breakdown

Direct Fit for Gravely Pro Turn & ZT Models
This isn’t a “universal” filter that requires adapters or guessing. It’s engineered to thread directly onto Gravely hydrostatic pumps used in Pro Turn 100, 200, 400, 500, 600, 700, 800, and ZT HD, ZT XL, and ZT X series. No cross-referencing part numbers—if your mower is from the last 10–15 years, it’s likely a match.

High-Flow Filtration Media
Hydraulic systems rely on clean oil to prevent pump cavitation and wear. These filters use a pleated cellulose/synthetic blend that traps particles down to 25 microns without restricting flow. That matters because a clogged filter starves the pump, leading to overheating and premature failure.

Threaded Canister Design
Unlike spin-on oil filters that can be a bear to remove, these have a standard 3/4-16 thread with a smooth metal base. You can hand-tighten them easily, and removal with a strap wrench is straightforward. No special tools required.

2-Pack Value
Most Gravely owners need to change the filter every 200–300 hours or annually. Buying two at once saves you from a last-minute trip to the dealer mid-season. It’s also useful if you have two machines or want one as a backup.

OEM Equivalent Specs
These filters meet or exceed Gravely’s original equipment specifications for burst pressure, bypass valve setting, and filtration efficiency. That means you’re not sacrificing performance for price.

Pros

1. Drop-in compatibility with the most common Gravely zero-turn models—no guesswork or adapters.
2. Cost-effective 2-pack that saves you roughly 15–20% compared to buying two singles at a dealership.
3. Easy to replace with basic hand tools; no need to drain the entire hydraulic system if you’re quick.
4. High-quality filtration that protects your expensive hydrostatic pumps from debris and wear.
5. Rated for 200+ hours of service, so one filter change covers a full season for most homeowners.
6. Positive early reviews—the 5.0 rating (even with just one review) suggests early buyers are satisfied with fit and performance.

Cons

1. Limited compatibility—these won’t work on older Gravely models (pre-2000s) or non-Gravely brands like John Deere or Cub Cadet.
2. No installation instructions included—if you’re new to hydraulic filter changes, you’ll need to find a guide online or in your owner’s manual.
3. Single review at launch—while the rating is perfect, there’s not a large sample size to confirm long-term durability across different climates.
4. Price per filter is $24 each—that’s competitive with OEM but not a bargain compared to generic hydraulic filters that might fit (though I wouldn’t risk it).

Bottom Line

If you own a Gravely Pro Turn or ZT Series zero-turn mower and take your maintenance seriously, this 2-pack of hydraulic filters is a smart investment. It delivers OEM-level protection for your hydrostatic transmission at a price that undercuts most dealerships, and the direct-fit design eliminates any guesswork. I recommend grabbing a set if you’re approaching the 200-hour mark or planning a pre-season fluid change—it’s cheap insurance against a $1,500 pump replacement. Just double-check your model year against the compatibility list, and you’re good to go.

Frequently Asked Questions

Q: How often should I change this hydraulic filter on my Gravely mower?
A: Gravely recommends replacing the hydraulic filter every 200 hours of operation or annually, whichever comes first. If you mow in dusty conditions or push the mower hard on hills, consider changing it every 150 hours. Always replace the hydraulic fluid at the same time for best results.

Q: Will this filter fit my Gravely ZT HD 48?
A: Yes, these filters are designed for the ZT HD series, including the 48-inch deck models. They also fit ZT XL, ZT X, and Pro Turn 100–800 series. For absolute certainty, check your owner’s manual for the OEM part number—these replace Gravely 5020604 and similar.

Q: Can I change this filter without draining all the hydraulic fluid?
A: Yes, with a quick swap technique. Have your new filter ready, unscrew the old one quickly, and install the new one immediately. You’ll lose maybe a few ounces of fluid from the filter housing. Just top off the reservoir afterward and bleed any air by running the mower at low idle for a minute.