Key Features
Gets Into Tight Spots The long, narrow jaw shape reaches where standard tongue and groove pliers usually run out of room. That matters for service work, under-dash repairs, and cramped equipment access. Fast Push-Button Fit Adjustment happens right on the workpiece with the push button, so you can size the Knipex 87 51 180 Cobra ES Water Pump Pliers quickly without fumbling for the right opening. Secure, Low-Effort Grip The self-locking design on pipes and nuts helps keep the jaws planted with less hand force. That means better control and less slip when you are working one-handed or in awkward positions.
Overview
The Knipex 87 51 180 Cobra ES Water Pump Pliers is a compact specialty pliers tool built for gripping, turning, and holding fasteners and small parts in hard-to-reach areas. This is a water pump pliers designed for service, maintenance, equipment repair, and automotive access work. Model Number: 87 51 180. At 7-1/4 inches long, it gives you the reach advantage of a slim nose without jumping up to a larger, bulkier pliers that is harder to position in confined spaces.
What separates this Cobra ES from a standard tongue and groove pliers is the jaw geometry. Knipex uses longer, narrower jaws so you can reach deeper past surrounding parts. The front gripping serration adds another layer of usefulness because it helps grab round parts like screws, bolts, and even wire rope near the tip. There is also a groove near the tip for holding nails, pins, and bolts, which makes this tool especially handy when your fingers do not have enough clearance to start or steady a small part.
On the job, the push-button adjustment is a real time-saver. You can set the jaw opening directly on the workpiece instead of stepping through a stiff slip-joint and hoping you land in the right spot. Knipex also gives this model fine adjustment positions for a more precise fit across different sizes. A better fit means less rocking on the part, more control during turns, and less chance of rounding hardware.
The gripping performance is built around practical use, not gimmicks. The tool is self-locking on pipes and nuts, so once it bites, it is less likely to walk off the workpiece. Knipex also calls out firm grip on flat material through three-point contact. In plain terms, this means the jaws are designed to hold both round and flat work more confidently than a general-purpose pliers with a less specialized jaw pattern.
Build quality is what you would expect from Knipex. The pliers are forged from chrome vanadium electric steel and oil-hardened for durability. The box-joint construction matters here because it gives the tool a more stable feel under load and helps the hinge stay aligned over time. Polished jaws and a grey atramentized finish round out the working surfaces, while the non-slip plastic handles keep the grip straightforward and dependable without adding bulk.
From a jobsite practicality standpoint, this is a smart carry piece for technicians and mechanics who regularly work around harnesses, housings, brackets, and tightly packed assemblies. The slim head and joint construction make it easier to approach a fastener from angles where larger pliers simply will not fit. The pinch guard is a small feature, but it is the kind of detail you appreciate after a long day of repetitive adjustments.
If you do plumbing service, equipment maintenance, automotive work, or general repair, this Knipex water pump pliers earns its place by doing something standard pliers do not do well: reaching in and still holding on. It is not the tool you buy for maximum jaw capacity in open spaces. It is the one you grab when access is the problem and you still need a reliable, controlled grip.
Reach Into Narrow Access Points
This is where the Cobra ES design pays off. The longer, narrower jaws let you get onto small or recessed parts without the bulky head shape that gets in the way on standard pliers.
- Long, slim jaw profile improves access in cramped assemblies
- Front gripping serration helps hold round parts near the tip
- Well suited for maintenance, repair, and automotive tasks
Hold Small Parts More Securely
For starting a small fastener, holding a pin, or managing a part your fingers cannot reach, this tool gives you better control than a standard wide-jaw pliers. The tip groove is a simple feature, but it solves a real problem fast.
- Groove near the tip is designed for nails, pins, and bolts
- Three-point contact improves grip on flat material
- Self-locking action on pipes and nuts reduces hand effort
Built To Stay Tight Under Load
Good access does not matter if the joint gets sloppy. Knipex uses a box-joint design and forged chrome vanadium electric steel so the tool feels solid where it counts, especially when you are leaning on a stubborn fitting or fastener.
- Box-joint construction improves stability and hinge strength
- Forged, oil-hardened chrome vanadium electric steel for durability
- Non-slip plastic handles keep the grip simple and secure
Key Specifications
| Tool Type | Water Pump Pliers |
|---|---|
| Overall Length | 7-1/4 in. |
| Weight | 0.39 lbs |
| Max Jaw Opening | 1-1/4 in. |
| Tip Thickness | 1/4 in. |
| Adjustment Positions | 18 |
| Material | Chrome vanadium electric steel, forged, oil-hardened |
| Joint Type | Box-joint |
| Handle Type | Non-slip plastic |
| Surface Finish | Polished jaws with grey atramentized finish |
| Standard | DIN ISO 8976 |
| Made In | Germany |
Built For
Automotive Equipment Repair Service Work Maintenance General Industry Tight Access Fasteners
Pro Tip
If you are starting a small bolt or pin in a spot your fingers cannot reach, use the groove near the tip to hold it in place while you get the first threads or alignment started. It is one of those features that seems minor until it saves you ten minutes fishing hardware out of a machine.
Warranty & Support
Limited Lifetime manufacturer warranty.
Tool Nut’s Take
Tool Nut’s Take
Knipex 87 51 180 Cobra ES Water Pump Pliers is the one you buy for access
If tight clearance is what slows you down, this pliers makes a strong case for itself fast.
- Who it’s for: Techs, mechanics, maintenance crews, and repair pros who constantly work around crowded assemblies and need more reach than a standard Cobra gives them.
- Why it stands out: The slim ES jaw shape, front serration, push-button adjustment, and box-joint build make it more than just another small tongue and groove pliers.
- Worth knowing: This is a specialty-access tool, not a big general-purpose pliers. If your work is mostly out in the open, a standard Cobra may cover more ground, but in tight spots this one flat-out earns its keep.
Common Questions
- What type of tool is this? It is a water pump pliers, also commonly grouped with tongue and groove pliers, built for gripping and turning pipes, nuts, bolts, and small parts.
- What is the maximum jaw opening? The maximum jaw opening is 1-1/4 inches for round pipe, hex, and general working capacity.
- What makes the ES version different? The ES version uses longer, narrower jaws and a slim head design to reach into tighter spaces than a standard Cobra pliers.
- Where is it made? This tool is made in Germany.
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