Original SANY Oil Filler Cap 160102130003A091 Construction Machinery Parts

The genuine SANY parts reference 160102130003A091 is the Oil Filler Cap, a precision‑molded sealing component that closes the engine oil fill port in SANY heavy‑duty diesel engines. The 160102130003A091 oil filler cap features a bayonet‑style lock with an integrated O‑ring and a pressure‑relief valve that opens at 0.2 bar to vent crankcase pressure while preventing oil splash.

Manufactured from glass‑fiber reinforced nylon with a nitrile rubber seal, this cap provides a leak‑tight closure and resists heat, oil, and vibration. Each 160102130003A091 unit is 100% inspected for sealing integrity, valve function, and thread fit, guaranteeing reliable performance in SRT dump trucks, SY excavators, SW wheel loaders, and motor graders.

Oil Filler Cap

Маслозаливная горловина крышка

Tapa de llenado de aceite

Oil Filler Cap

Маслозаливная горловина крышка

Tapa de llenado de aceite

Oil Filler Cap

Маслозаливная горловина крышка

Tapa de llenado de aceite

Material and Design of Oil Filler Cap 160102130003A091

The oil filler cap 160102130003A091 is injection‑molded from glass‑fiber reinforced nylon (PA66+GF30), providing excellent mechanical strength and heat resistance (continuous use to 130°C, peak 150°C). The cap has a bayonet‑style locking mechanism with three lugs that engage with the filler neck. A large grip surface allows easy removal without tools, even with oily hands.

A nitrile rubber O‑ring (70 Shore A) is permanently bonded to the cap’s sealing face, creating a leak‑tight seal against the filler neck. The cap also incorporates a pressure‑relief valve: a spring‑loaded rubber poppet that opens at 0.2 bar differential pressure, venting crankcase gases to the atmosphere while preventing oil splash. The valve also acts as a one‑way check (inward) to prevent dust ingestion.

The cap is designed with a tether retention hole (optional) to attach a lanyard. The external surface is textured for grip. The overall diameter is 65 mm, height 40 mm. The cap meets the requirements of ISO 8532 for oil filler caps in diesel engines.

All 160102130003A091 caps are 100% inspected for O‑ring integrity (no cracks), valve operation (cracking pressure tested at 0.2 bar ±0.02 bar), and bayonet lug dimensions (go/no‑go gauge). A sample from each batch is heat‑aged (150°C for 100 hours) and then tested for sealing; no leakage is permitted. A batch code on the cap provides full traceability.

Function of Oil Filler Cap 160102130003A091 in Engine System

The oil filler cap 160102130003A091 seals the oil fill tube on the engine valve cover. When the engine is running, the cap prevents oil mist and hot gases from escaping, while the built‑in pressure relief valve vents excess crankcase pressure (blow‑by) to the atmosphere, preventing seal and gasket damage. The valve is designed to open outward only, so no dirt is sucked in during engine cooling.

The cap also acts as a secondary safety device: if the engine’s positive crankcase ventilation (PCV) system becomes blocked, the relief valve opens to prevent pressure buildup that could blow out the dipstick or oil seals. The O‑ring seal is resistant to engine oil and diesel fuel, and the glass‑fiber nylon body does not corrode like metal caps.

A missing or damaged cap will cause oil splatter on the engine, loss of oil, and potential dirt ingress. Always ensure the cap is tightly closed after adding oil. The bayonet lock provides a tactile click when fully engaged. Replace the cap if the O‑ring is cracked or the relief valve sticks.

Compatible SANY Models & Engine Applications

The oil filler cap 160102130003A091 is used on SANY D07, D09, and D12 series diesel engines. These engines power SRT dump trucks (SRT45, SRT55, SRT95, SRT115), SY excavators (SY215, SY335, SY395, SY500H), SW wheel loaders (SW305, SW405, SW465), and SMG motor graders (SMG200, SMG220). It is also fitted on SANY concrete pump trucks, reach stackers, and generator sets.

The cap fits filler necks with a 52 mm inner diameter bayonet pattern. It is also compatible with many Perkins and Cummins engines of similar design, but always use the genuine SANY cap for proper valve calibration. When replacing a lost cap, order 160102130003A091 to ensure correct vent pressure and sealing.

For fleet maintenance, inspect the cap O‑ring at every oil change (500 hours). Replace the cap if the O‑ring is cracked, flattened, or if the relief valve does not move freely. Keep a spare cap in the maintenance kit to prevent downtime from a lost cap.

Technical Specifications – Oil Filler Cap 160102130003A091

Proper Installation of Oil Filler Cap 160102130003A091

Before installing the cap 160102130003A091, clean the filler neck threads and sealing surface. Inspect the O‑ring for any cuts or hardening – replace the cap if damaged. Align the cap’s bayonet lugs with the slots in the filler neck, push down gently, and turn clockwise 90 degrees until a click is felt. Do not force – the cap should seat easily.

After installation, run the engine and check for any oil mist escaping around the cap. A properly sealed cap will show no leakage. If oil splatter is observed, the O‑ring may be damaged or the cap not fully locked. Re‑tighten and re‑check. If the relief valve is stuck open, you may hear a hissing sound – replace the cap.

When adding oil, place the cap on a clean surface (not on the ground). Use the tether (if available) to prevent loss. Do not over‑tighten the cap – the bayonet stop prevents over‑torque. Replace the cap every 5 years or if the O‑ring becomes brittle.

Symptoms of a Damaged Oil Filler Cap

A damaged 160102130003A091 cap will show oil seepage around the filler neck. You may see oil stains on the valve cover or smell burning oil if oil drips onto the exhaust. A missing cap will cause rapid oil loss from splatter and allow dirt ingestion, leading to engine wear. The low oil pressure warning light may illuminate if oil level drops.

If the relief valve is stuck closed, excessive crankcase pressure may blow out the dipstick or cause oil to leak from seals. If the valve is stuck open, you may hear a constant hissing and oil mist may escape. A cracked cap body (from age or UV exposure) will also leak. Replace the cap immediately if any of these symptoms appear.

During engine service, inspect the O‑ring for flat spots or cracks. If the cap is difficult to turn (binding), clean the filler neck threads. Use only genuine SANY caps; aftermarket caps may lack the pressure relief valve or have incorrect vent pressure, causing seal damage.

Quality Assurance & Full Traceability for 160102130003A091

Every oil filler cap 160102130003A091 is manufactured in an IATF 16949 certified facility. The process includes injection molding of nylon, assembly of the O‑ring and relief valve, and final calibration. 100% of caps are leak‑tested at 0.3 bar (positive and negative) with a vacuum fixture; no leakage allowed.

A sample from each batch is tested for relief valve cracking pressure (0.2 bar ±0.02 bar) using a calibrated flow bench. The O‑ring is tested for hardness (70 Shore A) and compression set. Heat aging (150°C for 100h) is performed on a sample, followed by a repeat leak test. A batch code molded into the cap provides traceability to production date and material lot.

For bulk orders, SANY provides a Certificate of Conformance (CoC) confirming that all 160102130003A091 caps meet material, dimensional, and pressure‑relief specifications. Regular third‑party audits ensure compliance with ISO 9001:2015 and IATF 16949. Use only genuine SANY caps for reliable crankcase sealing.

Field Performance of Genuine SANY Oil Filler Cap

Field data from SANY equipment operating in Australian mines and Indonesian plantations shows that genuine 160102130003A091 caps last the full engine life (over 20,000 hours) when replaced every 5 years. The glass‑fiber nylon resists UV degradation and oil exposure, and the nitrile O‑ring maintains its sealing force through thousands of heat cycles.

Aftermarket caps often use cheap polypropylene that becomes brittle and cracks within 2‑3 years, or they lack the pressure relief valve entirely, leading to crankcase pressure buildup and oil seal leaks. Genuine SANY caps eliminate these issues. Fleet owners report zero filler cap‑related oil leaks after standardizing on genuine caps.

To maximize service life, replace the cap when the O‑ring shows signs of hardening (loss of elasticity). Keep a spare cap in the toolbox. Clean the filler neck before installing. Following these practices ensures a clean engine and no lost oil.