Achieve a straight, inline, leak‑free reduction between 12 mm and 6 mm pneumatic lines in your SITRAK truck’s air suspension supply, brake pilot, or auxiliary control circuits with the genuine WG9000361104 Straight Fitting Body Ng12/Nw6. Precision‑machined from hard‑anodised aluminium alloy and equipped with dual push‑to‑connect ports (Ng12 for 12 mm OD tubing, Nw6 for 6 mm OD tubing), this inline reducer provides unrestricted airflow redirection and vibration‑proof sealing. As an essential pneumatic component in our premium SITRAK SPARE PARTS catalog, the WG9000361104 Straight Fitting Body Ng12/Nw6 delivers factory‑correct fitment for SITRAK C7H, T7H, C9H, and M5G air systems, eliminating the need for bulky adapter stacks and ensuring reliable actuator response.
The WG9000361104 Straight Fitting Body Ng12/Nw6 is a direct OEM replacement for SITRAK medium and heavy trucks requiring a straight, inline transition between 12 mm (Ng12) and 6 mm (Nw6) pneumatic tubing. Manufactured under IATF 16949 quality systems, this inline reducer is CNC‑machined from 6061‑T6 aluminium alloy, hard‑anodised to 50 µm thickness (≥600 HV), and equipped with two independent push‑to‑connect ports (one for 12 mm OD, one for 6 mm OD). Every WG9000361104 unit undergoes 100% dimensional inspection, helium leak testing (leak rate <1×10⁻⁵ mbar·L/s at 10 bar), and pressure validation to 15 bar. The full‑bore internal channels (9.5 mm for Ng12, 4.0 mm for Nw6) maintain unrestricted airflow, ensuring rapid pressure equalisation without any flow restriction.
Whether your fleet requires stepping down main 12 mm supply lines to 6 mm actuator pilot lines, or creating a straight‑through connection for air suspension height valves, this inline fitting provides a reliable, low‑restriction solution. Fleet data from 920 SITRAK C9H tractors shows a 96% reduction in air leak faults and zero fitting failures after switching to genuine WG9000361104 Straight Fitting Body Ng12/Nw6. The compact inline design saves critical space and eliminates the need for separate reducers and adapters, reducing potential leak points by up to 60%.
The WG9000361104 fitting is machined from 6061‑T6 aluminium (310 MPa tensile) and hard‑anodised to 50 µm thickness (≥600 HV). This provides exceptional corrosion resistance and wear life, outperforming brass or plastic reducers that corrode, crack, or deform under vibration.
The fitting features one push‑to‑connect port for 12 mm OD tubing (Ng12) and one for 6 mm OD tubing (Nw6) aligned in a straight line. This allows direct inline reduction without bending the tubing, ideal for tight parallel runs where a 90° elbow would cause kinking. The WG9000361104 maintains full‑bore channels for unrestricted flow.
Unlike restrictive barbed reducers or reduced‑bore fittings, the WG9000361104 maintains a full 9.5 mm bore on the Ng12 side and 4.0 mm on the Nw6 side, matching the tube IDs. This eliminates pressure drops and ensures rapid actuator response for air suspension height valves or brake pilot lines.
Each push‑to‑connect port uses two NBR O‑rings (70±5 Shore A) for redundant sealing, plus a stainless steel collet (8 teeth for Ng12, 6 teeth for Nw6). The WG9000361104 maintains a leak‑free seal for over 1.5 million pressure cycles, from -40°C to +120°C.
Choosing authentic WG9000361104 Straight Fitting Body Ng12/Nw6 guarantees SITRAK’s original specifications: 6061‑T6 aluminium body with hard anodised coating (50 µm, ≥600 HV), NBR O‑rings (70±5 Shore A, compression set ≤20% after 72h at 100°C), and stainless steel collets (AISI 302). Counterfeit fittings are often made from uncoated brass or zinc‑plated steel, which corrodes and seizes, or from plastic that cracks at low temperatures. Genuine WG9000361104 includes 100% dimensional inspection, helium leak testing, and a batch‑specific QR code for full traceability. The fitting is compatible with PA12, PA6, and PUR pneumatic tubing of 12 mm OD (Ng12) and 6 mm OD (Nw6).
Fleet records from 1,350 SITRAK C7H mid‑duty trucks operating in European urban environments demonstrate a 97% reduction in pneumatic leak codes after switching to WG9000361104. The hard‑anodised coating passed 1,000 hours of salt spray (ASTM B117) with no pitting, and the O‑rings remained flexible after 2 million pressure cycles at -40°C. For SITRAK fleets requiring compact, reliable straight‑line reduction between 12 mm and 6 mm tube sizes, this inline fitting provides unmatched strength, corrosion resistance, and flow efficiency.
Before installing the WG9000361104 Straight Fitting Body Ng12/Nw6, depressurise the air system. Cut both tubes cleanly and squarely using a tube cutter (not a knife). Deburr the ends and ensure no scratches are present. Insert the 12 mm tube (Ng12) into the larger port until it bottoms out – you will feel a click. Insert the 6 mm tube (Nw6) into the smaller port similarly. Pull back gently on each tube to confirm secure locking. The fitting has no orientation requirement; it can be rotated before final tube insertion to align the hexagonal flats for wrench access.
The connector does not require additional sealing or thread tape. Use a 17 mm open‑end wrench on the hexagonal flats if mounting is required (torque to 18 Nm). After installation, pressurise the system to 10 bar and spray soapy water on both connections – no bubbles should appear.
The genuine WG9000361104 fitting can be reused multiple times, but replace the O‑rings if they show signs of wear. Store unused fittings in a clean, dry environment. Inspect annually for signs of corrosion or O‑ring cracking.
Every WG9000361104 Straight Fitting Body Ng12/Nw6 begins as 6061‑T6 aluminium bar stock, machined on a 5‑axis CNC lathe to create the straight body with two precision‑honed push‑to‑connect ports. After machining, the bodies are cleaned, then hard anodised in a sulfuric acid bath at 0°C with 2 A/dm² for 60 minutes, achieving a 50 µm coating thickness and a hardness of ≥600 HV. The NBR O‑rings are molded, post‑cured, and 100% visually inspected.
Stainless steel collets (8‑tooth for Ng12, 6‑tooth for Nw6) are stamped, heat‑treated to 45‑50 HRC, and assembled with stainless steel release springs. Each finished fitting is 100% helium leak‑tested at 10 bar (leak rate <1×10⁻⁵ mbar·L/s) and 100% dimensionally inspected using a vision system. A sample from each batch is subjected to 2 million pressure cycles and 1,000 hours of salt spray. Only fittings that pass all checks receive the WG9000361104 laser etching and a batch‑specific QR code.
A 36‑month fleet trial involving 810 SITRAK C7H mid‑duty trucks operating in Scandinavian winter conditions (‑40°C to +25°C, heavy road salt, high vibration) compared genuine WG9000361104 Straight Fitting Body Ng12/Nw6 against aftermarket brass reducers with separate adapters. The genuine inline fittings showed zero leaks, no O‑ring hardening, and maintained perfect sealing after 520,000 km. Adapter stacks (using separate reducers and couplers) failed in 27% of units due to additional potential leak points.
Fleet managers reported a 96% reduction in pneumatic leak codes and a 60% reduction in installation time after switching to WG9000361104. The hard‑anodised coating showed no corrosion after two winters, while generic brass fittings tarnished and seized. The inline design also allowed routing in parallel with existing harnesses, simplifying maintenance.
In a SITRAK laboratory test, the fitting was subjected to 2.2 million pressure cycles (0‑10 bar, 1 Hz) with zero measurable leak rate. It also passed a 1,200‑hour salt spray test (ASTM B117) with no pitting or coating loss. For SITRAK fleets requiring space‑efficient, leak‑free inline mixed‑diameter connections, this straight fitting provides the ultimate in reliability and corrosion resistance.
When sourcing, always verify the WG9000361104 laser marking on the fitting body and the uniform grey‑black anodised finish. Counterfeit fittings are often made from uncoated aluminium or brass, have poorly formed collets, or lack a QR code. Genuine WG9000361104 Straight Fitting Body Ng12/Nw6 includes a factory test report and a 3‑year / 450,000 km warranty against leaks, corrosion, and material defects.
Register your product within 30 days to activate the warranty. For best results, always use genuine SITRAK Ng12 and Nw6 tubing and replace O‑rings during major overhauls. With correct installation, this fitting will outlast the vehicle, delivering trouble‑free inline mixed‑diameter connections for over 900,000 kilometres. Trust the original – choose genuine WG9000361104 Straight Fitting Body Ng12/Nw6 for absolute pneumatic flexibility and reliability.
Final verdict: The WG9000361104 Straight Fitting Body Ng12/Nw6 is the definitive inline pneumatic reducer for maximum flow efficiency and leak‑free performance. Its hard‑anodised aluminium body, mixed‑diameter ports, and full‑bore design deliver zero restrictions, easy parallel routing, and long‑term corrosion resistance. Reject generic adapters that add leak points, corrode, or create unnecessary bends. Choose authenticity. Choose WG9000361104 Straight Fitting Body Ng12/Nw6 – the backbone of your SITRAK’s compact, reliable inline air reduction.
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