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Knoxville, TN 37921

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English (865) 486-4003|Spanish (865) 486-4001

Ships Nationwide30-Day Returns

Search by part number or SKU...

|Brakes & Wheel End Air System Electrical & Lighting Engine Filtration Trailer Parts All Parts →

Cart

AI-powered truck and trailer agentic commerce platform. 50,000+ parts from trusted dealers.

English (865) 486-4003 Spanish (865) 486-4001 support@partsnow.ai 1701 Sutherland Avenue
Knoxville, TN 37921

Categories

Brakes & Wheel End
Air System
Electrical & Lighting
Engine
Filtration
Suspension & Steering
Trailer Parts
Drivetrain

Resources

Catalog
VIN Lookup
Visual Part ID
About
Contact

Policies

Shipping Policy
Return Policy
Terms of Service
Privacy Policy

© 2026 partsnow.ai. All rights reserved.partsnow.ai is operated by Post Equipment, Inc.

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|Secured by Stripe

AIR SPRING — TR9978 (Knox Trailers) | partsnow.ai

Home/parts/Suspension & Steering/TR9978

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TR9978 - AIR SPRING

Image is for illustration purposes only. Actual part may vary.

Knox TrailersSuspension & SteeringIn Stock

TR9978

AIR SPRING

$167.66

Free Pickup 30-Day Returns Secure Checkout

Specifications

SKUTR9978BrandKnox Trailers

Ask about this part

Compatibility, alternatives, and more

Complete the Job

Parts commonly needed alongside suspension & steering

SA-245825H-SP

In StockBrakes & Wheel End

KP Services Crossville

SA-245825H-SP

24.5 ALUMINUM WHEEL

179.YK5816

In StockBrakes & Wheel End

KP Services Crossville

179.YK5816

CLEVIS

179.SC20DB

In StockBrakes & Wheel End

KP Services Crossville

179.SC20DB

BRAKE CHAMBER

E30 3276D30

In StockBrakes & Wheel End

E30 3276D30

RH BRAKE CHAMBER 10021319

Related Parts

328347

In StockSuspension & Steering

328347

PRE-SIZED KING OIN KIT K147E

LNK1350-0111

In StockSuspension & Steering

LNK1350-0111

HEIGHT CONTROL VALVE 1350-0111

ABSZ70-7001

In StockSuspension & Steering

ABSZ70-7001

CAB AIR BAG

460.454B

In StockSuspension & Steering

460.454B

BI-METAL KING LIN KIT

Home/parts/Suspension & Steering/TR9978

Back to catalog

TR9978 - AIR SPRING

Image is for illustration purposes only. Actual part may vary.

Knox TrailersSuspension & SteeringIn Stock

TR9978

AIR SPRING

$167.66

Free Pickup 30-Day Returns Secure Checkout

Specifications

SKUTR9978BrandKnox Trailers

Ask about this part

Compatibility, alternatives, and more

Complete the Job

Parts commonly needed alongside suspension & steering

SA-245825H-SP

In StockBrakes & Wheel End

KP Services Crossville

SA-245825H-SP

24.5 ALUMINUM WHEEL

179.YK5816

In StockBrakes & Wheel End

KP Services Crossville

179.YK5816

CLEVIS

179.SC20DB

In StockBrakes & Wheel End

KP Services Crossville

179.SC20DB

BRAKE CHAMBER

E30 3276D30

In StockBrakes & Wheel End

E30 3276D30

RH BRAKE CHAMBER 10021319

Related Parts

328347

In StockSuspension & Steering

328347

PRE-SIZED KING OIN KIT K147E

LNK1350-0111

In StockSuspension & Steering

LNK1350-0111

HEIGHT CONTROL VALVE 1350-0111

ABSZ70-7001

In StockSuspension & Steering

ABSZ70-7001

CAB AIR BAG

460.454B

In StockSuspension & Steering

460.454B

BI-METAL KING LIN KIT

Category

Suspension & Steering

AvailabilityIn Stock

Details

Part Number: TR9978

AIR SPRING

Unit: ea

Dealer: Knox Trailers

Category

Suspension & Steering

AvailabilityIn Stock

Details

Part Number: TR9978

AIR SPRING

Unit: ea

Dealer: Knox Trailers