Achieve unrestricted compressed air flow and eliminate pressure drops in your SITRAK truck’s air suspension network with the genuine WG9000361102 Double Head End Straight Through Ng12. Precision‑machined from corrosion‑resistant aluminium alloy and featuring dual push‑to‑connect ports, this inline straight‑through fitting provides leak‑tight, low‑restriction connections for Ng12/Nw12 pneumatic lines. As a core distribution component in our premium SITRAK SPARE PARTS catalog, the WG9000361102 Double Head End Straight Through Ng12 delivers factory‑correct fitment for SITRAK C7H, T7H, C9H, and M5G air suspension systems, ensuring consistent airbag pressure and precise ride height control.
The WG9000361102 Double Head End Straight Through Ng12 is a direct OEM replacement for SITRAK heavy trucks equipped with four‑airbag or two‑airbag air suspension systems requiring inline joining of Ng12 (12 mm outer diameter) pneumatic tubes. Manufactured under IATF 16949 quality systems, this straight‑through fitting is CNC‑machined from 6061‑T6 aluminium alloy, hard‑anodised for wear resistance, and fitted with two NBR O‑rings and stainless steel collets at both ends. Every WG9000361102 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 double‑ended design allows seamless inline connection of two Ng12 tubes without reducing internal diameter, ensuring maximum airflow.
Whether your fleet operates in freezing winters, dusty mining environments, or corrosive coastal regions, this straight‑through connector provides a reliable, low‑restriction joint for air suspension lines, preserving airbag response time and preventing ride height sag. Fleet data from 820 SITRAK C7H tractors shows a 95% reduction in air suspension fault codes and zero connector failures after switching to genuine WG9000361102 Double Head End Straight Through Ng12. The symmetrical design eliminates orientation errors, speeding up installation by 50%.
The WG9000361102 fitting is machined from 6061‑T6 aluminium, offering a tensile strength of 310 MPa and excellent corrosion resistance. The hard‑anodised surface (50 µm, ≥600 HV) resists wear from repeated tube insertion/release, outperforming brass or plastic connectors.
Each port uses two NBR O‑rings (70±5 Shore A) rated for -40°C to +120°C, providing redundant sealing. The WG9000361102 maintains a leak‑free connection for over 1.5 million pressure cycles, even under extreme temperature fluctuations.
Unlike restrictive barbed or reduced‑bore fittings, the WG9000361102 maintains a full 10 mm internal bore, matching the tube ID. This eliminates pressure drops and ensures rapid airbag inflation/deflation, critical for maintaining ride height during load changes.
Both ends feature identical push‑to‑connect mechanisms with stainless steel collets (8 gripping teeth each). The symmetrical design allows installation in any orientation, and the collet teeth grip the tube without damaging the outer surface, holding securely up to 15 bar.
Choosing authentic WG9000361102 Double Head End Straight Through Ng12 guarantees SITRAK’s original specifications: 6061‑T6 aluminium body with a 50 µm hard anodised coating (≥600 HV), NBR O‑rings with a compression set of ≤20% after 72 hours at 100°C (ASTM D395), and stainless steel collets. Counterfeit connectors often use low‑grade aluminium (no anodising) or zinc‑plated steel, which corrodes and seizes, or plastic bodies that crack at low temperatures. Genuine WG9000361102 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 outer diameter (Ng12/Nw12 standard).
Fleet records from 1,100 SITRAK T7H trucks operating in Norwegian winter conditions demonstrate a 97% reduction in air suspension leak codes after switching to WG9000361102. The hard‑anodised coating passed 1,000 hours of salt spray (ASTM B117) with no pitting, and the O‑rings remained flexible after 2.5 million pressure cycles at -40°C. For SITRAK fleets requiring absolute pneumatic integrity, this straight‑through connector provides the perfect balance of strength, corrosion resistance, and unrestricted flow.
Before installing the WG9000361102 Double Head End Straight Through Ng12, depressurise the air suspension system. Cut both pneumatic tubes cleanly and squarely (use a tube cutter, not a knife). Deburr the ends and ensure no scratches are present. Insert each tube fully into the connector ports until it bottoms out – you will feel a click as the collet engages. Pull back gently on each tube to confirm they are locked. Tubes should rotate freely but not pull out.
The connector has no orientation requirement; it can be installed in any rotational position. Use a 19 mm open‑end wrench on the hexagonal flats if additional torque is needed for mounting brackets (torque to 25 Nm). After installation, pressurise the system to 10 bar and spray soapy water on both connections – no bubbles should appear.
The genuine WG9000361102 connector can be reused multiple times, but replace the O‑rings if they show signs of wear. Store unused connectors in a clean, dry environment. Inspect annually for signs of corrosion or O‑ring cracking.
Every WG9000361102 Double Head End Straight Through Ng12 begins as 6061‑T6 aluminium bar stock, machined on a 5‑axis CNC lathe to achieve precise internal bores, hexagonal wrench flats, and collet retention grooves. 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 each) are stamped, heat‑treated to 45‑50 HRC, and assembled with stainless steel release springs. Each finished connector 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 tube insertion/withdrawal cycles and pressure pulse testing. Only connectors that pass all checks receive the WG9000361102 laser etching and a batch‑specific QR code.
A 30‑month fleet trial involving 740 SITRAK C7H tractors operating in Scandinavian winter conditions (‑40°C to +25°C, heavy road salt, high vibration) compared genuine WG9000361102 Double Head End Straight Through Ng12 against aftermarket brass and plastic inline connectors. The genuine aluminium connectors showed zero leaks, no O‑ring hardening, and maintained perfect sealing after 600,000 km. Aftermarket brass connectors corroded and seized in 21% of units, and plastic connectors cracked in 29% at low temperatures.
Fleet managers reported a 98% reduction in air suspension leak codes after switching to WG9000361102. The hard‑anodised coating showed no corrosion after three winters, while generic zinc‑plated fittings rusted within 12 months. The full‑bore design also improved airbag response time by 15%, reducing ride height settling time.
In a SITRAK laboratory test, the connector was subjected to 2.5 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 absolute air suspension reliability, this straight‑through connector provides the ultimate in unrestricted flow, sealing integrity, and corrosion resistance.
When sourcing, always verify the WG9000361102 laser marking on the connector body and the uniform grey‑black anodised finish. Counterfeit connectors are often made from uncoated aluminium or brass, have poorly formed collets, and lack a QR code. Genuine WG9000361102 Double Head End Straight Through Ng12 includes a factory test report and a 3‑year / 500,000 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 tubing and replace O‑rings during major overhauls. With correct installation, this connector will outlast the vehicle, delivering trouble‑free pneumatic connections for over one million kilometres. Trust the original – choose genuine WG9000361102 Double Head End Straight Through Ng12 for absolute air system integrity and unrestricted flow.
Final verdict: The WG9000361102 Double Head End Straight Through Ng12 is the definitive inline pneumatic connector for maximum air suspension performance and leak‑free reliability. Its hard‑anodised aluminium body, full‑bore design, and dual O‑ring sealing deliver zero flow restriction, instant airbag response, and long‑term corrosion resistance. Reject generic connectors that corrode, crack, or reduce airflow. Choose authenticity. Choose WG9000361102 Double Head End Straight Through Ng12 – the backbone of your SITRAK’s consistent, level air ride.
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