# MotoRad 2015-180 High-Flow™ Series Thermostat for 1988-1989 Toyota 4Runner

### Specifications

Bypass Diameter: 1.14"

Bypass Length: 1.23"

Flange Thickness: 0.05"

Gasket or Seal included: No

Installation Tool Included: No

Jiggle Pin Weep Hole Included: No

Sealing Flange Outside Diameter: 2.04"

Temperature (Degree): 180F

### Features

-   Made of stainless steel
-   Provide increased flow
-   Triple-bridge design

### Product Details

High-Flow™ Series Thermostat by MotoRad®. Temperature: 180F. State-of-the-art equipment, strict quality control, and functional testing to each thermostat ensure customers that they can trust the high quality product used in their vehicle. MotoRad offers the only true good, better, best in the industry with standard flow, High Flow / Performance, and the patented Failsafe thermostats.

MotoRad High Flow thermostats are made of stainless steel and have enlarged openings to provide increased flow. MotoRad is the only thermostat manufacturer that produces true "High Flow" thermostats for today's higher performance engines. These parts also feature a triple-bridge design that increases strength, stability and reliability. High-flow thermostats also have a bypass valve that allows a small amount of coolant to circulate before fully opening. A standard thermostat flows about 37 gallons of coolant per minute. With MotoRad’s High-Flow thermostat, that number jumps to 56 gallons per minute. That’s almost a 50 percent increase in coolant flow. This additional flow of coolant is important for today’s high powered engines, high performance vehicles, towing, extreme heat and cold temperatures, extreme terrains and stop-and-go traffic.

And what does increase coolant flow mean for your engine? The increased coolant flow will reduce the delay in engine warm-up times, allows trapped air in the cooling system to escape and stabilizes the pressure of the cooling system overall.

Only MotoRad offers a true high-flow thermostat with improved performance for the toughest driving conditions.

Brand: MotoRad

Part Number: 2015-180

UPC: 055644201580

Alternate MPN: 2015180

OE Numbers: 19137214

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

1988

Toyota

4Runner

1989

Toyota

4Runner

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the Vehicle Fitment Table above before purchase.

**What part number is this?**  
The listed part number is 2015-180.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match the compatible vehicle applications listed in the fitment table.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment table before ordering.

### Common Searches

-   High-Flow™ Series Thermostat for Toyota 4Runner
-   2015-180 fitment
-   MotoRad High-Flow™ Series Thermostat
-   1988 Toyota 4Runner High-Flow™ Series Thermostat

## Details

- **Price:** 10.08 CAD
- **Vendor:** MotoRad
- **Type:** High-Flow™ Series Thermostat
- **Tags:** 1988-1989 Toyota 4Runner, 2015-180, Automotive, High-Flow™ Series Thermostat, MotoRad

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 10.08 CAD | In stock |

## Images

- MotoRad 2015-180 High-Flow™ Series Thermostat for 1988-1989 Toyota 4Runner

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-2015-180-high-flowtm-series-thermostat)
> Updated: 2026-08-17