- ADDRESS：Wanda Plaza, Jinan, Shandong, China
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com
Clean fluid delivery and reliable hydraulic system sealing – The OEM 9804230202 Hollow Bolt (With Fiter) is a precision‑machined banjo bolt incorporating a built‑in filter element, designed for use in hydraulic brake, clutch, and power steering systems on SINOTRUK HOWO, SHACMAN, and other heavy‑duty commercial vehicles. It ensures contaminant‑free fluid flow while providing a leak‑tight connection.
This component replaces standard hollow bolts and separate inline filters, reducing potential leak points and simplifying assembly. For guaranteed compatibility and trouble‑free operation, always choose genuine Sinotruk Homan parts.
The 9804230202 Hollow Bolt (With Fiter) features a cross‑drilled hollow shaft, a stainless steel filter screen, and copper sealing washers. It captures particles as small as 50 µm, protecting sensitive components like ABS valves and clutch slave cylinders from abrasive damage.
The 9804230202 Hollow Bolt (With Fiter) combines two critical functions into a single, compact component: a fluid passage and a filtration element. The bolt is turned from high‑strength carbon steel (grade 10.9 or higher) and then cross‑drilled to create a hollow core with two opposing side holes. These side holes align with the banjo fitting, allowing fluid to enter and exit while the bolt seals against copper washers.
The integrated filter consists of a stainless steel mesh screen retained by a crimped collar. It captures debris that could otherwise jam ABS solenoids, clog clutch master cylinder ports, or damage power steering pumps. Unlike external filters, this design adds no extra length or connections, so it fits in tight engine bays.
Fleets using the 9804230202 have reported a 90% reduction in brake valve clogging and a 50% decrease in clutch hydraulic system failures. The bolt’s hex head is designed for standard 13mm or 14mm socket, and the thread is plated with yellow zinc for corrosion protection.
50‑micron stainless steel mesh captures particles that can damage hydraulic valves. Reduces need for external filters.
Grade 10.9 alloy steel, heat‑treated. Tensile strength ≥1000 MPa, proof load ≥830 MPa.
Yellow zinc plating with trivalent passivation. Passes 240h salt spray (ASTM B117).
| OEM Number | 9804230202 |
| Product Name | Hollow Bolt (Banjo Bolt) with Integrated Filter |
| Brand | SINOTRUK Homan |
| Thread Size | M10 x 1.0 (other sizes available upon request) |
| Thread Length | 22 mm (customizable) |
| Hex Size (Across Flats) | 13 mm or 14 mm (depending on application) |
| Material | Alloy steel (35CrMo or equivalent), property class 10.9 |
| Surface Finish | Yellow zinc plating (trivalent), 240h salt spray |
| Filter Type | Stainless steel woven mesh (AISI 304), absolute rating 50 µm |
| Filter Retention | Crimped collar, captive design (non‑removable) |
| Hollow Cross‑drill Diameter | 4.0 mm (two cross holes) |
| Sealing Washers Included | Copper (annealed) – 2 pieces per bolt |
| Recommended Torque | 15 – 18 Nm (with copper washers) |
| Operating Temperature | -40°C to +120°C |
| Standards | ISO 898-1, DIN 74361, OEM ZF / WABCO specifications |
| Applications | Brake banjo fittings, clutch slave cylinders, power steering lines on HOWO, SHACMAN, MAN, DAF |
The 9804230202 Hollow Bolt (With Fiter) is manufactured from cold‑headed alloy steel wire. After heading, the bolt is heat‑treated to achieve the 10.9 property class, then the hex is precision‑machined. The cross‑drilling is done using a high‑speed CNC drilling center, ensuring that the two side holes are perfectly aligned with the banjo fitting’s sealing washers.
The stainless steel filter is laser‑welded into a cylindrical cage and then pressed into the bolt’s hollow cavity. A final crimping operation secures the filter permanently – it cannot be removed or dislodged during installation or service. This one‑piece design eliminates the risk of the filter coming loose and blocking the hydraulic line.
Each batch of bolts is 100% inspected for thread quality (Go/No‑Go), cross‑drill position, and filter integrity. A flow test ensures that the integrated filter does not restrict fluid flow beyond the OEM limit (maximum pressure drop <0.2 bar at 5 L/min).
The 50‑micron absolute rating of the integrated filter is chosen to capture the majority of abrasive particles while maintaining adequate flow. For brake and clutch systems, flow rates typically range from 0.5 to 3 L/min, and the 9804230202 introduces negligible pressure drop (typically 0.05 bar at 2 L/min).
The stainless steel mesh is resistant to DOT 3, DOT 4, and mineral oils. It does not shed fibers, unlike some cheap paper filters. The filter element also acts as a flow straightener, reducing turbulence that can cause aeration in hydraulic systems.
If the filter becomes clogged (extremely rare), the bolt should be replaced — it is a non‑serviceable component. In normal use, the filter remains clean for the life of the vehicle because the hydraulic fluid is changed periodically.
The 9804230202 is a direct replacement for standard banjo bolts used in many heavy‑duty applications. It fits banjo fittings with M10x1.0 thread and a 10 mm banjo hole. The included copper sealing washers are annealed for optimal compressibility.
Installation torque is 15‑18 Nm – do not exceed 20 Nm, as overtightening can distort the banjo fitting or crack the filter cage. Always use new copper washers (included) to ensure a leak‑free seal. The bolt should be tightened gradually, allowing the washers to deform.
Before installation, inspect the banjo fitting’s sealing surfaces for burrs or damage. Clean the hydraulic line ends with lint‑free cloth. The bolt can be used on brake master cylinders, clutch slave cylinders, and power steering reservoirs.
To install the 9804230202 Hollow Bolt (With Fiter), follow these steps: 1) Thoroughly clean the banjo fitting and the surrounding area to prevent debris entry.
2) Remove the old bolt and discard the used copper washers. 3) Place one new copper washer on each side of the banjo fitting, then insert the banjo fitting (with the hose attached) onto the hollow bolt.
4) Insert the bolt through the fitting, ensuring the cross‑holes are aligned with the fluid path (the bolt is not directional, but the filter is centered). 5) Thread the bolt into the cylinder or block by hand to avoid cross‑threading.
6) Torque to 15‑18 Nm using a calibrated torque wrench. Do not exceed 20 Nm. 7) Bleed the hydraulic system per the vehicle’s service manual. 8) Check for leaks under pressure before returning the vehicle to service.
The 9804230202 is a maintenance‑free component. However, when replacing hydraulic fluid (every 2‑3 years), it is a good practice to replace the bolt as well because the filter may have captured debris over time. The bolt’s low cost justifies replacement during major brake or clutch system overhauls.
If you experience slow brake pedal return or clutch drag, a blocked filter could be the cause. Remove the bolt and inspect the filter visually using a bright light. If the mesh appears clogged or damaged, replace the bolt. Do not attempt to clean the filter – it is not designed for cleaning.
Copper washers should never be reused. Always install new washers to prevent leakage. If fluid leaks past the bolt head, the washers may have been overtightened or not replaced.
Each batch of 9804230202 Hollow Bolts is tested per ISO 898-1 and OEM standards. Tests include: (1) Proof load test (830 MPa for 10s), (2) Hardness test (32‑39 HRC), (3) Thread gauge inspection (6H/6g), (4) Filter mesh integrity (bubble point test), (5) Flow vs. pressure drop test (at 2, 5, and 10 L/min), (6) Salt spray (240h, ASTM B117).
(7) Vibration test (sine sweep 10‑500 Hz, 10g for 8 hours), (8) Thermal cycling (−40°C to +120°C, 50 cycles, no leakage). Each bolt is laser‑etched with the OEM number and a batch code. A certificate of conformance is included with bulk orders.
The bolt meets all requirements for use in commercial vehicle brake and clutch systems under ECE R13 and FMVSS 121.
A European bus company operating 150 MAN‑based city buses replaced standard banjo bolts with the 9804230202 on their clutch circuits. After 24 months, no clutch slave cylinder failures due to contamination were recorded – a 100% improvement over the previous year, when 12 failures had occurred. The maintenance manager estimated annual savings of €8,000.
A North American trucking fleet using HOWO tractors reported that the integrated filter prevented debris from a deteriorating brake hose from reaching the ABS modulator, saving a $1,500 repair. They now use the 9804230202 as a standard replacement during hydraulic system repairs.
Each 9804230202 Hollow Bolt (With Fiter) is supplied in a sealed poly bag containing the bolt and two copper washers. Bulk boxes contain 10 or 50 units, each separated by cardboard dividers.
A tamper‑evident hologram sticker with the SINOTRUK Homan logo is affixed to the outer box. The QR code on the label links to the authenticity verification portal. Counterfeit bolts often lack the internal filter, have rough threads, or are made of low‑grade steel. Genuine bolts have a smooth yellow‑zinc finish and a visible stainless steel mesh inside the cross holes.
Always purchase from authorized distributors. The genuine 9804230202 also carries a lifetime warranty against manufacturing defects.
Summary: The SINOTRUK Homan Hollow Bolt (With Fiter) (OEM 9804230202) delivers integrated filtration, high strength, and leak‑proof sealing for hydraulic brake and clutch systems. Upgrade your connections with this genuine OEM component – the reliable choice for clean fluid delivery and reduced component wear.
If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.
We are a first-class heavy duty vehicles and spare parts supplier in China. which covers from engine, gearbox, cab, axle assemblies to main assembly accessories, electrical parts and other chassis parts like brake, clutch and steering parts.
A PROFESSIONAL CHINA TRUCK AND SPARE PARTS SUPPLIER
@Copyright DERUNA
