Diesel Injection Line Wrench Set – 14/17/19mm Sizes

Brief Overview

This three-piece diesel injection line wrench set provides the exact tooling required for assembly and disassembly of common-rail fuel injection connections across BMW, Mercedes, Volkswagen, FIAT, Citroën, Peugeot, Renault, and IVECO platforms. Each wrench is precision-forged with a 1-inch drive socket collar and a multi-slot flared head designed to engage injection line nuts without rounding or slipping. The included blue molded carrying case keeps tools organized and protected between jobs. Pair this set with a fuel filter removal tool or expand coverage with a six-piece diesel injector socket set for a complete fuel system service capability.

Key Features

• Three precision sizes: 14mm, 17mm, and 19mm to cover primary European diesel platforms
• 1-inch drive socket collar with drilled retention hole for secure ratchet coupling
• Multi-slot flared design prevents cam-out and rounding of injection line nuts
• Forged chrome-plated steel construction resists corrosion and wear
• Protected storage: Blue molded plastic carrying case with snap latch closure
• Tapered shaft design allows wrench to slip around tubing for tight access
• Size-stamped collars for quick identification on the job

Technical Specifications

Specification	Detail
Wrench Sizes	14mm, 17mm, 19mm
Drive Size	1 inch (square drive)
Head Design	Multi-slot flared socket, open-fork configuration
Material	Forged steel, chrome-plated finish
Overall Length	Approximately 60–70mm per wrench
Storage	Blue molded plastic case with hinged lid and snap latch
Set Quantity	3 wrenches

Vehicle Application Coverage

• 14mm: BMW, Mercedes, Volkswagen, FIAT, Citroën, Peugeot, Renault, IVECO common-rail systems
• 17mm: Mercedes engine variants (100, 130, 314, 360, 360h, 352A, 346/355, 401, 402, 403, 615, 616, 617)
• 19mm: Mercedes M-series engines (352A, 346/355A, 401, 402/422LA, 403, 407h)

Business Advantages for Resellers

Service Demand: Diesel injection service is a high-margin, recurring revenue stream. This set addresses the three most common metric sizes across Europe's largest truck and commercial vehicle fleet—Mercedes, Volkswagen, and Renault. Every fuel system diagnostic and injector replacement job requires these exact tools.

Shop Necessity: Professional diesel shops cannot operate without injection line wrenches. A shop without this set loses jobs or pays premium labor rates to rent tools. Position this as a non-negotiable inventory item.

Bundle Potential: Pair with multi-piece diesel socket sets to create a comprehensive fuel injection service package and increase transaction value.

Margin Stability: Forged steel tools have a long service life. Unlike consumables, repeat sales are driven by shop expansion or tool replacement due to loss/damage—predictable revenue cycles.

Professional Application

Mechanics and technicians use these wrenches to service high-pressure common-rail fuel injection systems without damaging precision-machined fittings. The multi-slot head design distributes load across the nut profile, preventing the rounding that occurs with standard open-end or adjustable wrenches. The 1-inch drive collar integrates seamlessly with ratchet handles and torque wrenches for controlled, repeatable fastening.

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Ready to stock a tool your diesel shop customers cannot work without. Order in bulk to establish injection line service capability and capture high-margin fuel system diagnostics and repair work.