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Pre-Assembled Brake Master Vacuum Assembly with Diesel-Specific Vacuum System and Tandem Hydraulic Circuit for ISUZU NHR 4JB1

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Pre-Assembled Brake Master Vacuum Assembly with Diesel-Specific Vacuum System and Tandem Hydraulic Circuit for ISUZU NHR 4JB1

MOQ:	4 peças
preço:	negotiable
Embalagem padrão:	Pacote Neutro ou conforme solicitação dos clientes
Período de entrega:	5 a 8 dias úteis
Método de pagamento:	T/T, União Ocidental
Capacidade de abastecimento:	8000 PCes/mês

Informações detalhadas

Descrição do produto

Informações detalhadas

Lugar de origem

China

Marca

Certificação

ISO/TS16949

Número do modelo

ISUZU NHR 4JB1

Número da peça OEM:

8-97033988-0 (também 8970339880)

Tipo de vácuo:

Bomba de vácuo acionada por motor

Tipo de cilindro mestre:

Tandem (circuito hidráulico duplo)

Comprimento da vara de empurrão:

18,0 – 18,2 mm

Torque do cilindro mestre:

15 – 25 N·m

Torque de reforço:

22 – 31 N·m

Torque da linha de freio:

9 – 15 N·m

Peso líquido:

2,8kg

Destacar:

ISUZU NHR 4JB1 brake master vacuum assembly

diesel-specific vacuum system for ISUZU

tandem hydraulic circuit brake assembly

Descrição do produto

Brake Master Vacuum Assembly 8-97033988-0 For ISUZU NHR 4JB1 Diesel Truck

The brake master vacuum assembly carrying OEM number 8-97033988-0 combines the vacuum brake booster (servo) and the hydraulic master cylinder into a single factory-assembled unit. It is a direct bolt-on replacement for ISUZU NHR series light trucks powered by the 4JB1 2.8L diesel engine, including NHR55, NHR57, NHR69 chassis from the late 1980s through the late 1990s.

On diesel engines like the 4JB1, vacuum for the brake booster is drawn from a separate engine-driven vacuum pump, rather than the intake manifold as on gasoline engines. This design ensures consistent braking assistance even when the throttle is open or the engine is under load.

A failing vacuum booster typically reveals itself through a hard brake pedal (loss of assist), a hissing sound when pressing the pedal, or engine stalling during braking. A leaking master cylinder leads to a spongy pedal that slowly sinks under steady pressure.

Product Specifications

Part Number:	8-97033988-0 8970339880
Product Name:	Brake Master Vacuum Assembly
Car Model:	ISUZU NHR
Engine Model:	ISUZU 4JB1
Condition:	100% Brand New
Origin:	China Mainland
Main Market:	Middle East, Asia, Africa, South America, North America & Europe
Material:	High-strength aluminum alloy & precision bearings
Installation:	Direct OEM replacement
Quality Standard:	OEM equivalent / ISO quality control

Applications

This 8-97033988-0 brake vacuum assembly directly replaces the factory unit in the following configurations:

ISUZU NHR55 (1990-1996) - 2.8L 4JB1 naturally aspirated
ISUZU NHR57 (1993-1999) - 2.8L 4JB1-T turbocharged
ISUZU NHR69 (1995-1998) - late production 4JB1-TC intercooled turbo
ISUZU DMAX EXTENDED CAB 4X2 - 2.8L 4JB1 (RLF) with manual transmission, 1993-1999
ISUZU TFS SERIES (1997) - diesel cab-chassis configurations
ISUZU Faster / KB series (selected markets with 4JB1)
Chevrolet W3500 / W4 (rebadged ISUZU NHR, 1990s)

Features & Benefits

Single Pre-Assembled Unit Reduces Installation Time

The booster and master cylinder come pre-assembled and pressure-tested as a pair, eliminating the need for bench-bleeding and component transfer.

Diesel-Specific Vacuum System Compatibility

Designed to operate with diesel-driven vacuum pumps, maintaining consistent assist even at idle.

Tandem Hydraulic Circuit Design

Dual-circuit design ensures braking function is maintained even if one circuit fails.

Replacement for Two Common Failure Modes

Addresses both vacuum booster diaphragm failure and master cylinder seal hardening in one replacement.

Pushrod Adjustable to Factory Specification

Pushrod projection can be adjusted to 18.0-18.2 mm to compensate for wear or deformation.

ISO 9001 Manufacturing with Batch Traceability

Each unit is assembled and tested in an ISO 9001 certified facility with full traceability.

Quality Control & Verification

Each production batch undergoes comprehensive testing:

Pushrod projection measurement - set to 18.0-18.2 mm
Hydraulic pressure test - 1,200 psi for 60 seconds with zero leakage
Vacuum retention test - 500 mmHg with ≤ 2 mmHg pressure drop
Thread fit inspection - Go/No-go gauges for outlet ports
Mounting flange flatness - within 0.1 mm tolerance
Material certification - spectrographic analysis per batch
Salt spray testing - ASTM B117, 72 hours, no red rust

Packaging & Supply

Individual packaging: VCI sealed bag inside foam-lined carton
Carton dimensions: 30 × 30 × 25 cm per unit
Net weight: approx. 2.8 kg; Gross weight: approx. 3.5 kg
Master carton: 6 units per export carton
Lead time: 3-7 working days for stock orders
Minimum order quantity: 1 piece

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Pre-Assembled Brake Master Vacuum Assembly with Diesel-Specific Vacuum System and Tandem Hydraulic Circuit for ISUZU NHR 4JB1

MOQ:	4 peças
preço:	negotiable
Embalagem padrão:	Pacote Neutro ou conforme solicitação dos clientes
Período de entrega:	5 a 8 dias úteis
Método de pagamento:	T/T, União Ocidental
Capacidade de abastecimento:	8000 PCes/mês

Informações detalhadas

Descrição do produto

Informações detalhadas

Lugar de origem

China

Marca

YIMI

Certificação

ISO/TS16949

Número do modelo

ISUZU NHR 4JB1

Número da peça OEM:

8-97033988-0 (também 8970339880)

Tipo de vácuo:

Bomba de vácuo acionada por motor

Tipo de cilindro mestre:

Tandem (circuito hidráulico duplo)

Comprimento da vara de empurrão:

18,0 – 18,2 mm

Torque do cilindro mestre:

15 – 25 N·m

Torque de reforço:

22 – 31 N·m

Torque da linha de freio:

9 – 15 N·m

Peso líquido:

2,8kg

Quantidade de ordem mínima:

4 peças

Preço:

negotiable

Detalhes da embalagem:

Pacote Neutro ou conforme solicitação dos clientes

Tempo de entrega:

5 a 8 dias úteis

Termos de pagamento:

T/T, União Ocidental

Habilidade da fonte:

8000 PCes/mês

Destacar

ISUZU NHR 4JB1 brake master vacuum assembly

diesel-specific vacuum system for ISUZU

tandem hydraulic circuit brake assembly

Descrição do produto

Brake Master Vacuum Assembly 8-97033988-0 For ISUZU NHR 4JB1 Diesel Truck

Product Specifications

Part Number:	8-97033988-0 8970339880
Product Name:	Brake Master Vacuum Assembly
Car Model:	ISUZU NHR
Engine Model:	ISUZU 4JB1
Condition:	100% Brand New
Origin:	China Mainland
Main Market:	Middle East, Asia, Africa, South America, North America & Europe
Material:	High-strength aluminum alloy & precision bearings
Installation:	Direct OEM replacement
Quality Standard:	OEM equivalent / ISO quality control

Applications

This 8-97033988-0 brake vacuum assembly directly replaces the factory unit in the following configurations:

ISUZU NHR55 (1990-1996) - 2.8L 4JB1 naturally aspirated
ISUZU NHR57 (1993-1999) - 2.8L 4JB1-T turbocharged
ISUZU NHR69 (1995-1998) - late production 4JB1-TC intercooled turbo
ISUZU DMAX EXTENDED CAB 4X2 - 2.8L 4JB1 (RLF) with manual transmission, 1993-1999
ISUZU TFS SERIES (1997) - diesel cab-chassis configurations
ISUZU Faster / KB series (selected markets with 4JB1)
Chevrolet W3500 / W4 (rebadged ISUZU NHR, 1990s)

Features & Benefits

Single Pre-Assembled Unit Reduces Installation Time

The booster and master cylinder come pre-assembled and pressure-tested as a pair, eliminating the need for bench-bleeding and component transfer.

Diesel-Specific Vacuum System Compatibility

Designed to operate with diesel-driven vacuum pumps, maintaining consistent assist even at idle.

Tandem Hydraulic Circuit Design

Dual-circuit design ensures braking function is maintained even if one circuit fails.

Replacement for Two Common Failure Modes

Addresses both vacuum booster diaphragm failure and master cylinder seal hardening in one replacement.

Pushrod Adjustable to Factory Specification

Pushrod projection can be adjusted to 18.0-18.2 mm to compensate for wear or deformation.

ISO 9001 Manufacturing with Batch Traceability

Each unit is assembled and tested in an ISO 9001 certified facility with full traceability.

Quality Control & Verification

Each production batch undergoes comprehensive testing:

Pushrod projection measurement - set to 18.0-18.2 mm
Hydraulic pressure test - 1,200 psi for 60 seconds with zero leakage
Vacuum retention test - 500 mmHg with ≤ 2 mmHg pressure drop
Thread fit inspection - Go/No-go gauges for outlet ports
Mounting flange flatness - within 0.1 mm tolerance
Material certification - spectrographic analysis per batch
Salt spray testing - ASTM B117, 72 hours, no red rust

Packaging & Supply

Individual packaging: VCI sealed bag inside foam-lined carton
Carton dimensions: 30 × 30 × 25 cm per unit
Net weight: approx. 2.8 kg; Gross weight: approx. 3.5 kg
Master carton: 6 units per export carton
Lead time: 3-7 working days for stock orders
Minimum order quantity: 1 piece

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