Yimi (Guangzhou) Automotive Parts Co, Ltd
| Diaphragm Material | EPDM rubber |
| Linkage Type | Clevis pin |
| Actuation Type | Single-acting pneumatic |
| Inlet Port Thread | Standard NPT or metric |
| Weight | 1.2 kg |
| Housing Material | Powder-coated steel |
| Supply Ability | 8000 pcs/month |
| Payment Terms | T/T,Western Union |
| Packaging Details | Neutral Package or as customers’ request |
| Operating Pressure | 125 psi (8.6 bar) maximum |
| Delivery Time | 5-8 Work Days |
| Mounting Type | Bolt-on flange with two bolt holes |
| Place of Origin | China |
| Model Number | ISUZU NKR NPR NQR 4BE1 4BD1 4HF1 |
| Certification | ISO/TS16949 |
| Brand Name | YIMI |
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Product Specification
| Diaphragm Material | EPDM rubber | Linkage Type | Clevis pin |
| Actuation Type | Single-acting pneumatic | Inlet Port Thread | Standard NPT or metric |
| Weight | 1.2 kg | Housing Material | Powder-coated steel |
| Supply Ability | 8000 pcs/month | Payment Terms | T/T,Western Union |
| Packaging Details | Neutral Package or as customers’ request | Operating Pressure | 125 psi (8.6 bar) maximum |
| Delivery Time | 5-8 Work Days | Mounting Type | Bolt-on flange with two bolt holes |
| Place of Origin | China | Model Number | ISUZU NKR NPR NQR 4BE1 4BD1 4HF1 |
| Certification | ISO/TS16949 | Brand Name | YIMI |
| High Light | ISUZU exhaust brake chamber ，EPDM diaphragm brake cylinder ，125 psi ISUZU truck part | ||
The exhaust brake chamber cylinder, carrying OEM numbers 8971086160 and 8-97108616-0, is a pneumatic actuator that controls the exhaust butterfly valve on ISUZU N-series diesel trucks. It is a direct bolt‑on replacement for vehicles powered by 4BE1, 4BD1, and 4HF1 engines, including NKR, NPR, and NQR chassis manufactured between 1985 and 1994.
This single-acting pneumatic cylinder is mounted on the exhaust brake valve assembly. When engaged, compressed air pushes a diaphragm and rod to close a butterfly valve in the exhaust stream, creating back pressure that provides auxiliary braking force—critical for medium‑duty trucks descending steep grades with full payloads.
| Part Number | 8971086160, 8-97108616-0 |
| Product Name | Exhaust Brake Chamber Cylinder |
| Car Model | ISUZU NKR NPR NQR |
| Engine Model | ISUZU 4BE1 4BD1 4HF1 |
| Condition | 100% Brand New |
| Material | High-strength aluminum alloy & precision bearings |
| Operating Pressure | 125 psi (8.6 bar) |
| Quality Standard | OEM equivalent / ISO quality control |
This ISUZU exhaust brake chamber 8971086160 directly replaces the factory unit in the following configurations:
| Chassis | Engine | Years | Notes |
|---|---|---|---|
| ISUZU NKR57 | 4BC2 | 1985–1994 | Light‑duty cab‑over |
| ISUZU NKR58 | 4BE1 | 1985–1994 | 3.6L diesel, light‑medium duty |
| ISUZU NKR66 | 4HF1 | 1987–1994 | 4.3L diesel, updated chassis |
| ISUZU NPR57 | 4BC2 | 1985–1994 | Medium‑duty 6‑wheel |
| ISUZU NPR58 | 4BE1 | 1985–1994 | Most common 4BE1 platform |
| ISUZU NPR59 | 4BD1 | 1985–1994 | 3.9L diesel, widely exported |
| ISUZU NPR66 | 4HF1 | 1987–1994 | 4.3L diesel, higher GVWR |
| ISUZU NPS59 | 4BD1 | 1985–1994 | 4x4 chassis variant |
Additional compatibility extends to early HINO FC models and certain MITSUBISHI CANTER, TOYOTA COASTER, and DYNA platforms sharing the same pneumatic exhaust brake architecture from the 1980s–1990s.
| QC Item | Verification Method |
|---|---|
| Diaphragm material | Spectrometer and tensile test per batch |
| Return spring compression | Spring dynamometer measurement |
| Housing weld integrity | Visual and dye penetrant inspection |
| Pneumatic leak test | 120 psi submerged test for 60 seconds |
| Burst pressure safety | 180 psi pressure hold test |
| Mounting bracket alignment | Go/no‑go fixture verification |
| Powder‑coat adhesion | ASTM D3359 cross‑hatch test |
Full functional test: Random 2–5% of each batch cycled at 120 psi for 500 cycles to measure stroke length consistency and return spring recovery time.
Manufacturer provides a 6‑month warranty against manufacturing defects with certificate of conformance and batch traceability.
The ISUZU exhaust brake chamber cylinder 8971086160 is a direct‑fit, single‑acting pneumatic actuator for 1985–1994 NKR, NPR, and NQR trucks equipped with 4BE1, 4BD1, or 4HF1 diesel engines. It replaces failed diaphragms and return springs to restore auxiliary braking for downhill operation. EPDM construction resists under‑chassis heat, and powder‑coated steel housing withstands road salt and moisture. One SKU covers eight chassis models across three engine families. ISO 9001 certified with batch traceability and 6‑month warranty.
Order a sample unit today to verify fitment on your ISUZU N‑series chassis—the same chamber fits NKR57, NPR59, and NPR66 trucks alike.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
2005
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Yimi(Guangzhou) Automotive Parts Co,Ltd located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv... Yimi(Guangzhou) Automotive Parts Co,Ltd located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv...
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