Windshield Washer Reservoir for 1995-2019 Kenworth - Direct Fit

In this review the focus is on the TRQ windshield washer reservoir as a direct, vehicle-specific replacement for a wide range of Kenworth models. The bottom line is simple: this reservoir is for owners and technicians who need a straightforward OE replacement that installs without modification and restores washer system function. The reviewer found it to be a direct fit for listed models, includes the washer pump, and uses durable materials, making it a practical swap when the original tank is cracked or underperforming.

Key Features

• Direct Fit: Fits specified 1995-2019 Kenworth models with minimal adjustment, saving installation time and reducing the need for custom brackets.
• OE Replacement: Built to serve as an original equipment equivalent so it integrates with existing washer plumbing and mounting points where compatible.
• Washer Pump Included: Ships with a pump to restore full system function without sourcing additional components, speeding up repairs.
• Durable Materials: Constructed from plastic and metal parts designed to handle road vibration and typical shop use for reliable longevity.
• Reference Compatibility: Cross-referenced to multiple aftermarket numbers such as 603-5401 and R86-1004 to help confirm fitment before purchase.

Who It's For

This reservoir is aimed at truck owners, fleet maintenance shops, and independent diesel mechanics working on Kenworth models listed in the fitment. If the original tank is cracked, leaking, or missing a pump, this part provides a near-plug-and-play repair that gets trucks back on the road quickly.

Those who need a universal or custom washer solution should look elsewhere, as this unit is a vehicle-specific OE replacement. Also, if a full mounting hardware kit or fluid level sensor is required, plan to source those separately since they are not included.

Pros & Cons

Pros

• Good fit and alignment for listed models, with multiple customers noting hoses lined up without cutting.
• Includes the washer pump so the replacement restores system operation in most cases.
• Perceived value and quality from the mold-injection construction give confidence in long-term use.
• Clear aftermarket reference numbers help verify compatibility before ordering.

Cons

• Mounting hardware and a fluid level sensor are not included, which may require additional parts for a complete swap.
• Some customers expressed varied opinions about leak resistance, so careful installation and seal inspection are advised.

Specifications

Product	Windshield washer reservoir
Compatible Vehicles	1995-2019 Kenworth C500, K300, T170, T270, T300, T370, T400, T450, T600A, T660, T800, W900
Material	Plastic & metal
Washer Pump	Included
Fluid Level Sensor	No
Mounting Hardware	Not included
Reference Numbers	603-5401, K114-20, K114-46, R86-1001, R86-1004, R86-1011

Our Verdict

The reservoir is a sensible choice for anyone repairing a listed Kenworth model because it restores washer function with a direct-fit, pump-included unit and solid build quality. It offers clear value for money compared with sourcing multiple parts, though buyers should budget for missing mounting hardware or a sensor if those are needed.

Frequently Asked Questions

Does this include the washer pump?
Yes, the washer pump is included with the reservoir so the basic washer system can be restored on replacement.

Is mounting hardware provided?
No, mounting hardware is not included, so you may need existing brackets or to obtain fasteners separately.

Will this fit my Kenworth?
It fits the specific Kenworth models and years listed in the product details; check the compatibility information against your truck before ordering.