The HPS 1-1/2″ (38mm) ID, 1-3/4″ Long Black Silicone Reinforced Coolant Cap For Bypass Heater Vacuum Valve Water Port arrives packed properly, checked against your vehicle and tracked from our door.
Hoses and fittings work under pressure and heat, where material choice decides service life. Keep petroleum away from standard silicone unless the hose is lined for it.
The long black silicone reinforced listed here is checked against your vehicle before dispatch.
Every long black silicone reinforced order goes through the same fitment review.
Ordering the long black silicone reinforced takes a minute and the confirmation reaches you straight away.
Our team knows the long black silicone reinforced well, so ask if anything about the specification is unclear.
Stock of the long black silicone reinforced is live on this page rather than estimated.
Shops order the long black silicone reinforced from us in volume because the data on the page is accurate.
Quick specs
- Material: Silicone
- Finish: Black
- Category: Universal Hose
- Price: $30.15 with free shipping over $99
- Availability: in stock, dispatched from the USA
Manufacturer specifications
The HPS Performance 1-1/2″ (38mm) high temperature reinforced black silicone cap is designed specifically to be installed on your cooling system. Vacuum caps have no reinforcement and are intended for vacuum and very little pressure. The HPS reinforced silicone caps are manufactured just like our reinforced silicone radiator hoses. While traditional rubber coolant cap might crack and cause coolant leak, HPS Performance high temperature 3-ply polyester reinforced silicone caps will withstand the high temperatures and pressures of your cooling system for years to come.
HPS Reinforced Silicone Caps are compatible for use with coolant, water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, and much more.
Technical Specification
Product Type: Reinforced Silicone Coolant Cap
HPS Part Number: RSCC-150-BLK
Temperature Range:- 65 deg. F to + 350 deg. F (177 deg. C)
Reinforced Layer: 3-ply Polyester
Inside Diameter: 1-1/2″ (38mm)
Color: Black
Wall Thickness: 4mm
Inside Length: 1-3/16″
Overall Length: 1-3/4″
UV and ozone resistant
Remark: HPS reinforced silicone caps are not compatible with fuel, oil, or any petroleum-based products.
- Material: 3-Ply Reinforced Polyester Silicone
- Color: Black
- Made of High Temperatureerature 3-ply Polyester Reinforced Silicone. Maximum Temperature Rating: 350 deg. F (177 deg. C).
- Ideal for heavy duty pressure connections and provides excellent resistance for high temperature applications
- Compatible for use with coolant, water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, and much more.
- Inside Diameter: 1-1/2″ (38mm). Overall Length: 1-3/4″
- HPS reinforced silicone caps are not compatible with fuel, oil, or any petroleum-based products.
Application:
HPS Reinforced Silicone Caps are Universal Fit that compatible for use with coolant, water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, and much more.
Remark:
Installation: Compatible with Water/Coolant ONLY, Not for Fuel/Oil
Product Content:
- 1 x Coolant Cap
The product does not come with manual/instruction, Professional Install Recommended
Cross Reference Number:
- RSCC-150-BLK, RSCC150BLK
We would rather answer a question before you buy than process a return afterward, so ask freely.
Related parts: Hoses & Fittings · HPS 3.12″ (80mm) ID, 4″ Leg Long Black 4-Ply Silicone 1/2″ Offset Coupler Hose · HPS 2.25″ (57mm) ID, 6″ Leg Long Black 4-Ply Silicone 1/2″ Offset Coupler Hose · full catalog
Orders placed before early afternoon usually leave our USA warehouse the same business day, with tracking emailed at label creation.
For safety and service guidance from outside the aftermarket, see the fuel economy maintenance guidance.
Common questions
Will this part fit my vehicle?
We verify every doubtful order by hand. Give us the year, make, model and engine option and we will confirm compatibility in one reply.
When will my order dispatch?
Same business day dispatch applies to orders placed before the early afternoon cutoff, with tracking that updates at every carrier scan.
What is the return policy?
Returns are handled in one reply for most cases. Keep your order confirmation, since it is the only proof of purchase we need.
How do you protect it in transit?
We verify diameter and reinforcement specification on every hose order.

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