We make Shipping affordable - without handling fees!
Our experienced shipping department will package your order for secure delivery. We will contact you if your order requires additional attention.
We're here to help – please contact us with any questions.
Do you need faster delivery?
For guaranteed Next Day, 2-Day or 3-Day delivery, please call our friendly sales team Monday through Friday from 9-5 ET at 231-873-9252.
Know your shipping costs with our FREE and Flat Rate delivery options.
FREE or Flat Rate offers are available for single shipments to retail customers within the contiguous 48 United States.
Only $10.99 for shipping on eligible orders with a subtotal from $0 to $49.99.
Only $13.99 for shipping on eligible orders with a subtotal from $50 to $174.99.
ALL Items can earn FREE shipping on eligible orders with a subtotal of $175 or more.
Carrier and service type will be chosen by Pro-werks on any order shipped by FREE or Flat Rate delivery. Please provide your U.S. Postal-specific address if it's different than your UPS address.
Factors that determine your shipping cost:
Delivery rates, if any, are determined by the size and weight of your package, service type and destination. You may select your delivery method of your choice during checkout.
Arrange your own shipping:
When arranging your own carrier for delivery, leave a message in the shopping cart Order Notes field and choose "Pick Up" as your Shipping Method during checkout. We will contact you to complete the process.
Delivery within the United States:
Our package delivery carriers within the United States are UPS and Post Office Mail.
Some service options may not be available to all areas.
Heavy and oversized shipments may be delivered as Truck Freight. We will notify you if your order must be shipped by truck.
Truck delivery is 2-14 business days in continental United States.
We ship orders to APO, FPO and DPO addresses using the Post Office.
Estimated UPS Ground Days-in-Transit Map for the United States from Muskegon Heights, Michigan 49444
Estimated Priority Mail (Post Office) Days-in-Transit Map for the United States from Muskegon Heights, Michigan 49444
Delivery to U.S. Territories:
Our package delivery carriers for U.S. Territories are UPS and Post Office Mail.
Some service options may not be available to all areas
If shipping to a United States address for pickup or freight forwarding, UPS, Post Office Mail or Truck Freight may be used.
Based your order contents and location, you may be responsible for additional duties, taxes or customs fees that are not represented in the Invoice total. These potential charges are imposed by the destination territory and collected by the carrier prior to delivery.
Delivery to Canada & Mexico:
Our package delivery carrier for Canada and Mexico is UPS including UPS Standard ground service.
Some service options may not be available to all areas.
If shipping to a United States address for pickup or freight forwarding, UPS, Post Office Mail, or Truck Freight may be used.
Based your order contents and location, you may be responsible for additional duties, taxes or customs fees that are not represented in the Invoice total. These potential charges are imposed by the destination country and collected by the carrier prior to delivery.
Delivery to all other countries:
Our package delivery carrier for international orders is UPS.
Someservice options may not be available to all areas.
If shipping to a United States address for pickup or freight forwarding, UPS, Post Office Mail or Truck Freight may be used.
Based your order contents and location, you may be responsible for additional duties, taxes or customs fees that are not represented in the Invoice total. These potential charges are imposed by the destination territory and collected by the carrier prior to delivery.
Questions that may come up after you receive your order:
Was something damaged or lost? Inspect all shipments immediately upon delivery and have driver record any damage or loss. All damage or loss claims should be made directly to the carrier. Save all packaging for carrier inspection and notify us of your damage or loss claim within two business days.
Did you receive more or less than ordered? Please report any incorrect, missing or extra items to us within two business days of receipt of the order.
Do you need to make an exchange? To expedite the exchange process we simply ask that you place a new order for the correct item(s) before returning your original item(s). Please contact us to initiate your exchange.
Do you need to schedule return?
Products in original, saleable condition may be returned for a refund of purchase price minus shipping costs within thirty (30) days of purchase. A return goods authorization (RGA) is required and all eligible products are subject to a 20% restocking fee unless an offsetting order is placed. The original invoice must accompany all returns. Special order and custom built products are not eligible for return.
Any product not returned in original condition will not be eligible for a refund or exchange.
We make Shipping affordable - without handling fees!
Our experienced shipping department will package your order for secure delivery. We will contact you if your order requires additional attention.
We're here to help – please contact us with any questions.
Do you need faster delivery?
For guaranteed Next Day, 2-Day or 3-Day delivery, please call our friendly sales team Monday through Friday from 9-5 ET at 231-873-9252.
Know your shipping costs with our FREE and Flat Rate delivery options.
FREE or Flat Rate offers are available for single shipments to retail customers within the contiguous 48 United States.
Only $10.99 for shipping on eligible orders with a subtotal from $0 to $49.99.
Only $13.99 for shipping on eligible orders with a subtotal from $50 to $174.99.
ALL Items can earn FREE shipping on eligible orders with a subtotal of $175 or more.
Carrier and service type will be chosen by Pro-werks on any order shipped by FREE or Flat Rate delivery. Please provide your U.S. Postal-specific address if it's different than your UPS address.
Factors that determine your shipping cost:
Delivery rates, if any, are determined by the size and weight of your package, service type and destination. You may select your delivery method of your choice during checkout.
Arrange your own shipping:
When arranging your own carrier for delivery, leave a message in the shopping cart Order Notes field and choose "Pick Up" as your Shipping Method during checkout. We will contact you to complete the process.
Delivery within the United States:
Our package delivery carriers within the United States are UPS and Post Office Mail.
Some service options may not be available to all areas.
Heavy and oversized shipments may be delivered as Truck Freight. We will notify you if your order must be shipped by truck.
Truck delivery is 2-14 business days in continental United States.
We ship orders to APO, FPO and DPO addresses using the Post Office.
Estimated UPS Ground Days-in-Transit Map for the United States from Muskegon Heights, Michigan 49444
Estimated Priority Mail (Post Office) Days-in-Transit Map for the United States from Muskegon Heights, Michigan 49444
Delivery to U.S. Territories:
Our package delivery carriers for U.S. Territories are UPS and Post Office Mail.
Some service options may not be available to all areas
If shipping to a United States address for pickup or freight forwarding, UPS, Post Office Mail or Truck Freight may be used.
Based your order contents and location, you may be responsible for additional duties, taxes or customs fees that are not represented in the Invoice total. These potential charges are imposed by the destination territory and collected by the carrier prior to delivery.
Delivery to Canada & Mexico:
Our package delivery carrier for Canada and Mexico is UPS including UPS Standard ground service.
Some service options may not be available to all areas.
If shipping to a United States address for pickup or freight forwarding, UPS, Post Office Mail, or Truck Freight may be used.
Based your order contents and location, you may be responsible for additional duties, taxes or customs fees that are not represented in the Invoice total. These potential charges are imposed by the destination country and collected by the carrier prior to delivery.
Delivery to all other countries:
Our package delivery carrier for international orders is UPS.
Someservice options may not be available to all areas.
If shipping to a United States address for pickup or freight forwarding, UPS, Post Office Mail or Truck Freight may be used.
Based your order contents and location, you may be responsible for additional duties, taxes or customs fees that are not represented in the Invoice total. These potential charges are imposed by the destination territory and collected by the carrier prior to delivery.
Questions that may come up after you receive your order:
Was something damaged or lost? Inspect all shipments immediately upon delivery and have driver record any damage or loss. All damage or loss claims should be made directly to the carrier. Save all packaging for carrier inspection and notify us of your damage or loss claim within two business days.
Did you receive more or less than ordered? Please report any incorrect, missing or extra items to us within two business days of receipt of the order.
Do you need to make an exchange? To expedite the exchange process we simply ask that you place a new order for the correct item(s) before returning your original item(s). Please contact us to initiate your exchange.
Do you need to schedule return?
Products in original, saleable condition may be returned for a refund of purchase price minus shipping costs within thirty (30) days of purchase. A return goods authorization (RGA) is required and all eligible products are subject to a 20% restocking fee unless an offsetting order is placed. The original invoice must accompany all returns. Special order and custom built products are not eligible for return.
Any product not returned in original condition will not be eligible for a refund or exchange.
Turn heads while working on your race car with Pro-werks' signature Easy Turn Fill Caps. Once you've added one of these amazing assemblies, you'll want to install one at every location possible on your hot rod. And you may find yourself checking things more often, just to get your hands on the Easy Turn cap again!
These lightweight, non-vented Pro-werks Fill Caps feature deep finger notches for a positive and comfortable grip, this design is another Pro-werks innovation, appreciated by everyone who uses them.
Precision matters.
We start with American melt 6061-T6 billet aluminum; it is precision CNC machined to exacting standards for proper fit and to create the foundation for obtaining amazing finishes.
This design uses a radial squeeze action on a Buna O-ring for a secure seal. Precision machined quick-start coarse threads make using these caps a breeze.
The large selection of Pro-Werks mounting bungs are crafted from steel, aluminum or stainless steel and available in both weld-in and bolt-on styles.
Great caps. Great colors.
The proprietary color finishing processes are available in your choice of either brilliance anodized black, red and blue or micro-polished aluminum—resulting in unmatched jewelry quality finishes.
The right size matters.
Easy Turn Fill Caps come in many sizes and are packaged as complete assemblies with your choice of one of the many versatile mounting options, or each component is also available separately.
Popular uses for Easy Turn Fill Caps include:
Custom-fabricated tanks
Fuel cells
Rear End housings
Valve covers
Overflow tanks
Ice boxes for intercoolers
Ballast tanks
Inspection viewing ports
Be sure to check out the entire line up - Billet aluminum Easy Turn Fill Caps are a Pro-Werks specialty. Watch the Video below to learn more !
Proudly made here in the USA.
Note: Welding should always be performed by a qualified welder.
Customer Comments:
"I use your bolt on caps and bungs on my carbon fiber Cummins common rail valve covers. Love the quality. Thank you." – Randy Davis, Owner of OldSkoolFab, Inc.
"I upgraded my fuel cell to an Easy Turn fill cap assembly. It wasn't long until all my friends did the same. Great product!" – As shared with us at the PRI Show
Finish Your Tank
We also offer a full line of weld plumbing bungs to complete your tank project.
Click the images below to view all the options.
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Spend $175 to get free shippingSpend $175 more to get free shippingCongratulations! You get free shipping.