General Pump Hose Reel Lock Pin M8 DHRA - 2440

Secure, Simple Reel Locking for Mobile Rigs

The General Pump hose reel lock pin is a spring-loaded mechanical locking device that prevents the reel drum from rotating, keeping your hose tightly wound and secure during transport and storage. It's the simplest, most reliable way to stop your high-pressure hose from unspooling on the road, in the shop, or anywhere your rig sits idle. If you've ever pulled up to a job site only to find 200 feet of hose tangled around your trailer axle, this is the fix.

Why You'll Love It

The General Pump hose reel lock pin solves a handful of real-world headaches that every pressure washing contractor and maintenance crew knows too well. Here's what it actually does for you on the job:

• Keeps your hose exactly where you left it – The pin engages with a hole or notch on the reel drum, locking it solid so the spool can't free-spin while you're driving between jobs, rolling equipment across a shop floor, or hauling your rig over rough terrain. Spring-loaded lock pins secure hose reels during transport, and this one does it with zero guesswork.

• Cuts setup and pack-up time – No more re-spooling 150 to 300 feet of high-pressure hose that walked off the drum during transit. Engaging the lock pin stops unwanted spooling during transport, so you pull up, drop the pin, and get straight to work.

• Protects fittings, swivels, and guides – A lock pin helps to reduce wear and tear on the hose reel by eliminating the shock loads, tangles, and loose-coil abrasion that chew up swivel joints, hose guides, and crimped ends over time.

• Built to survive field abuse – This is hardened steel and stainless hardware designed for constant water spray, detergents, outdoor storage, and the kind of daily beating that mobile rigs take. The spring keeps pressure on the pin to ensure engagement, job after job.

• Simple, glove-friendly operation – Pull the pin, rotate the drum, release the pin. One hand, no tools, no complicated latches. It works just as well with wet gloves on a February morning as it does bare-handed in July.

What Makes It Different

Most guys who've dealt with generic hose reel locks know the frustration: flimsy pins that bend after a few months, brackets that rattle loose on bumpy trailers, or improvised setups with bolts and bungee cords that "sort of" work until they don't. The result is a reel that creeps, unspools, and damages hose and fittings every time you hit a pothole.

The General Pump hose reel lock pin is built differently, specifically for professional pressure washing rigs and industrial carts where failure isn't just annoying - it costs you time and money.

• Engineered for General Pump hose reels – The pin is shaped and sized to match the factory-drilled indexing holes on General Pump reel drums and flanges, giving you positive engagement instead of the "almost fits" slop you get from aftermarket bolts or universal pins. Replacement pin locks are compatible with various hose reel models across the DHRA series and smaller portable reels like the 2100357, so whether you're running 100 feet or 450 feet of hose, the lock fits.

• Positive locking feel – When the pin drops into the detent hole, you feel it. That firm, tactile snap tells you the reel is locked before you hit the road - no second-guessing, no rattling, no gradual unwinding over 60 miles of highway.

• Corrosion-resistant hardware – The assembly includes stainless steel washers and corrosion-resistant plating on the bracket and fasteners, all designed for constant water exposure, chemical detergents, and outdoor storage conditions that would rust out cheaper alternatives in a season. Stainless steel pin lock kits are also available for Titan hose reels if you're running mixed fleets.

• Serviceable, not disposable – The pin, spring, bracket, washer, and cotter pin can all be replaced individually through General Pump's repair kit system, so you service what wears out instead of replacing the whole reel. That's smarter maintenance and lower long-term cost.

How It Works

A General Pump hose reel lock pin is a manual locking device that sits through a bracket on the reel's side plate or frame. A typical assembly includes a metal pin and a spring - the spring keeps the pin loaded against the drum flange, and the pin indexes into one of the factory-drilled holes in the reel drum to lock it against rotation. The pin assembly helps maintain tension on the hose while in use and locks the drum completely when you're done.

1. Unlocking to spool hose – Pull the spring-loaded pin out of the detent hole before winding or unwinding your hose. The reel needs to rotate freely during use, so you retract the pin, hold it clear, and crank. They are compatible with hand crank and motorized reels, though some electric reels do not come with pin locks included, so check your setup.

2. Locking for transport or storage – Once the hose is wound, rotate the drum until its indexed hole lines up with the bracket. Release the pin and let the spring snap it into the hole. The pin prevents the reel drum from rotating - locking the drum secures the hose during maintenance or transport, and it stays put until you deliberately pull it free again.

3. The result you'll notice – Your reel stays locked on rough roads, in truck beds, on trailer-mounted skids, and when moving cleaning carts over curbs and ramps. Pin locks secure hose reels during mobile use over rough terrain, which means no more arriving at a job site with hose piled on your trailer deck.

Important: Never try to crank the reel or force rotation while the lock pin is engaged and the system is under pressure. That's how you bend the pin, damage the bracket, or warp the drum flange.

Product Details

Here are the concrete specs on the General Pump hose reel lock pin so you can verify fit and durability before you add it to your build.

• Material / Finish: Hardened steel pin body with corrosion-resistant plating, stainless steel M8 washer, and robust spring steel compression spring designed for repeated cycling in wet, chemical-heavy environments. The bracket is steel with powder-coat or plated finish for long-term outdoor use.

• Dimensions / Specs: The pin is sized to index into an approximately 8mm (M8) detent hole in the reel drum flange. Handle style varies by reel model - ring pull or knob configurations are common for one-handed, glove-friendly operation. Spring force is calibrated for firm, positive engagement without requiring excessive pull effort.

• Compatibility: Designed to fit General Pump DHRA series reels - including the DHRA50150 (150 ft of 3/8" hose), DHRA50300 (300 ft of 3/8" hose), and DHRA50450 (450 ft of 3/8" hose) - as well as smaller portable models like the 2100357 (100 ft of 3/8" hose). The pin indexes into factory-drilled positions on these reels, typically at fixed intervals around the drum flange. Spring-loaded lock pins prevent reel movement over rough terrain across all these application sizes.

• Installation Points: Mounts through the existing lock bracket on the reel's side plate or frame. Most users can install with basic hand tools - a wrench or socket set (M8/M10), pliers for the cotter pin - and have it done in minutes, not hours.

• Maintenance & Serviceability: Apply light oil to the pin shaft and spring periodically to ensure smooth action. Inspect for bending, corrosion, or elongated bracket holes during regular reel servicing. Clean out grit or debris that could prevent full engagement. Individual replacement springs, pins, and brackets are available so you only replace what's worn. Regular inspection of the lock pin is necessary to ensure functionality over the long haul.

Who It's For?

The General Pump hose reel lock pin is built for professionals and serious operators who run hose reels on skids, trailers, service trucks, and stationary wash bays - anyone who needs their reel locked down tight when it's not actively in use.

• Mobile pressure washing contractors – Those running General Pump reels on trailer or truck skids for house washing, concrete cleaning, fleet washing, and graffiti removal. If your rig bounces down highways and back roads between jobs, this pin is what keeps your hose where it belongs.

• Facilities, plant, and fleet maintenance teams – Shops with fixed or cart-mounted hose reels for wash bays, equipment cleaning, or sanitation lines who need reliable locking between uses and during shift changes.

• Agricultural and ranch operations – Users who transport rigs across rough farm lanes or fields and want to keep chemical or washdown hoses safely stowed. The lock pin handles the vibration and terrain that comes with rural application environments.

• DIY builders and upfitters using General Pump reels – Fabricators building custom skids, trailers, or van setups who need a simple mechanical way to lock the reel without complex brakes or electronics.

Whatever your setup, the outcome is the same: secure, predictable hose management every time the reel is not in active use.

Frequently Asked Questions

Here are the most common questions about fit, installation, and safe use of the General Pump hose reel lock pin.

Is the lock pin compatible with my General Pump hose reel? The lock pin assembly fits General Pump DHRA series reels (DHRA50150, DHRA50300, DHRA50450) and smaller portable models like the 2100357 and DHRHC50100. Many standard steel General Pump reels share the same lock pin design and detent hole pattern. Check your reel's model plate or owner's manual to confirm compatibility before you order. Replacement pin locks are compatible with various hose reel models, and stainless steel pin lock kits are available for Titan hose reels if you're running a mixed fleet.

Can I use the lock pin while the reel is under pressure? No. The lock pin is strictly for transport and storage - it's not a pressure-holding device. Never try to crank the reel, force drum rotation, or operate the hose under pressure with the pin engaged. Doing so can bend the pin, deform the bracket, or damage the drum flange. Always depressurize the system and ensure the reel rotates freely before winding or unwinding hose.

How difficult is installation? Most users can handle it in a few minutes. The pin aligns with the existing lock bracket or detent plate on your General Pump reel - position the bracket (typically secured with two bolts), insert the spring and pin, and secure the retaining cotter clip. Standard hand tools (wrench or socket set, pliers) are all you need. Alignment is the key step: make sure the drum's indexed hole lines up cleanly with the bracket before securing everything.

What maintenance does the lock pin need? Periodic inspection is the main thing. Look for rust, pin deformation, weak spring tension, or elongated bracket holes. Clean out any grit or debris that could block full engagement, apply a light lubricant to the pin shaft and spring if action feels stiff, and replace the spring or pin if it no longer snaps firmly into place. General Pump sells individual replacement components so you only swap what's worn.

What happens if the pin is damaged or lost? The hose reel can still operate - you can wind and unwind hose as normal - but the drum will not lock for transport or storage. This means your hose can unspool on the road, causing tangles, fitting damage, and wasted time. Replace the pin promptly rather than improvising with bolts or non-factory hardware, which often have mismatched dimensions and can damage the reel's flange or pin hole over time.

Ready to Secure Your Hose Reel?

A General Pump hose reel lock pin means faster pack-up, safer transport, and less hose damage on every single job. No more free-spinning reels dumping hose across your trailer deck when you hit a rough patch of road. No more arriving at a job site and spending 15 minutes re-spooling before you can even start working.

Whether you're building a new General Pump hose reel setup from scratch or retrofitting an existing rig that needs a reliable lock, this is the simplest upgrade you can make for the biggest day-to-day payoff. Add the General Pump hose reel lock pin to your cart and put the problem behind you for good.