Exhaust Brakes Gasket / Seal For ISUZU NKR55 NKR77 Trucks With 4JB1/4KH1/4HK1/4JJ1 Engines OEM 5221160020 5221160021 8943283540 8943283541

 

Product Overview

 

 

This square-shaped exhaust brake gasket is a precision-engineered sealing component designed specifically for ISUZU light-duty and medium-duty trucks, ensuring a reliable, leak-proof connection between the exhaust brake assembly and exhaust system. It is compatible with a wide range of ISUZU models and engines, making it a versatile replacement part for maintaining optimal exhaust system performance.

 

OEM Cross-References:
Directly replaces OEM numbers:5221160020 5221160021 8943283540 8943283541 5-22116002-0 5-22116002-1 8-94328354-0 8-94328354-1

 

Key Compatibility：

Vehicle Models: ISUZU NKR55, NKR77, and other compatible N-series trucks

Engine Types: 4JB1, 4KH1, 4HK1, 4JJ1 engines (Euro 4 specification applicable for 4HK1-TCN, 4HK1-TCS, 4JJ1-TCS models)

System Fitment: Exhaust brake interface (matches the 5(A) gasket position in ISUZU official parts diagrams)

 

Dimensions:

 

– 88 mm × 74 mm
– Inner diameter: 53 mm
– Bolt spacing: 41 mm
– One end: 55 mm

 

 

 

 

This Exhaust Brake Gasket (also known as exhaust brake seal) is a high-temperature resistant sealing component designed specifically for Isuzu NKR55 and NKR77 series light-duty trucks. It is installed between the exhaust brake housing and the exhaust pipe or turbocharger outlet.

 

basic Information

 

Parameter	Details
Shape	Square (small size)
Material	Multi-layer reinforced metal composite with heat-resistant sealing layer
Mounting Holes	4 (standard flange pattern for ISUZU exhaust brakes)
Temperature Resistance	Up to 800°C
OEM Interchange	5221160020 5221160021 8943283540 8943283541 5-22116002-0 5-22116002-1 8-94328354-0 8-94328354-1
Application	Exhaust brake interface seal
Quality We Can Offer:	Famous Brand Aftermarket Quality /China ISUZU Quality/ Japanese ISUZU Quality for Choose
Warranty	1 Year
MOQ	1 Piece

 

 

Products Image

 

 

 

 

Product Function & Importance

 

 

The exhaust brake gasket plays a critical role in the exhaust and braking systems:

 

• Seals High-Pressure Exhaust Gases – Prevents leakage at the exhaust brake connection point.
• Maintains Exhaust Brake Efficiency – A proper seal ensures full backpressure generation for effective engine braking.
• Prevents Sooting & Noise – Eliminates black soot residue and whistling/hissing sounds from leaking joints.​​​​​​
• Withstands Extreme Heat – Designed to endure continuous exposure to high-temperature exhaust flow (up to 800°C+).

 

 

⚠️ Failure symptoms of a worn exhaust brake gasket:

 

• Black soot stains around the exhaust brake joint.
• Whistling or puffing noise during deceleration/braking.
• Reduced exhaust braking effect.
• Engine performance irregularity under load.

 

 

Why Choose Us?

 

• Professional Expertise: 29 Years of Isuzu Expertise – Since 1997.

 

We don't just sell parts – we know Isuzu.

For nearly three decades, our company has specialized exclusively in Isuzu commercial vehicles, pickups, and trucks. We cover the entire Isuzu lineup – from NKR, NPR, NQR, NPS to FSR, FTR, FVR, CXZ, and all engine families (4J, 4H, 6H, 6W, etc.).

29+ years of hands-on Isuzu parts experience

Full vehicle coverage – engine, transmission, exhaust, brake, chassis, electrical, and body

OEM & aftermarket – same quality, better value

Global shipping with same-day dispatch (orders before 2 PM)

Bulk/wholesale pricing available for workshops, fleets, and dealers

When you need a part for your Isuzu, you don't need multiple suppliers. We are your single source.

 

Related Products we can offer

 

All about ISUZU truck spare parts we can supply ,including Engine System Parts .Here are some classic products related to engine bearing  we can offer .

 

 

 

 

 

 

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If you have any questions about product quality, fitment, price, related products, or bulk procurement, please feel free to contact us. We will reply within 24 hours and provide professional solutions and competitive quotes.

 

 

 

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