• Dorman Autograde Steel Reverse Taper Cup Expansion Plug 3/8 In for Ford and Mercury 555-054
  • Dorman Autograde Steel Reverse Taper Cup Expansion Plug 3/8 In for Ford and Mercury 555-054
1 2
Dorman - Autograde

Dorman Autograde Steel Reverse Taper Cup Expansion Plug 3/8 In for Ford and Mercury 555-054

Dorman Autograde Steel Reverse Taper Cup Expansion Plug 3/8 In for Ford and Mercury 555-054

$22.96
$22.96
Sale Sold out

Shipping calculated at checkout.

Low stock: 7 left

Shipping & returns

Shipping details

In-stock orders are processed within 48 hours; transit time is additional.

International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.

Read the shipping policy

Returns

Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.

Read the full return policy
Return details & how to start

Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.

Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.

Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.

Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.

After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.

Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.

For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.

Specifications

Product details shared across all variants.

Product type
Engine Expansion Plug
Category
Motor Vehicle Engine Parts
Item condition
New
Manufacturer type
Aftermarket
Shipping weight
1.0 lb
Barcode
019495555544

Billable shipping weight; may include dimensional weight.

Steel reverse taper cup expansion plug 3/8 inch for Ford and Mercury vehicles used to replace worn or leaking factory engine plugs.

Built to meet the manufacturer's design intent for reliable service. This engine expansion plug is designed to match the fit and function of the original part on specified vehicles and is made of quality materials engineered for dependable performance.

Key Features

  • Constructed from durable steel for long-lasting strength
  • Features a reverse taper cup design for secure sealing
  • Measures 3/8 inch in diameter with a height of 0.310 inch
  • Direct replacement for original equipment expansion plugs
  • Validated through testing to ensure proper fit and function
  • Compatible with select Ford and Mercury engine blocks

Benefits

  • Restores engine integrity by sealing coolant or oil passages effectively
  • Reduces the risk of repeat repairs caused by inferior materials
  • Ensures a smoother installation process with OE-matching dimensions
  • Provides a trustworthy solution backed by over a century of automotive experience
  • Helps maintain proper engine operating temperatures by preventing leaks
  • Offers a cost-effective alternative to dealer-priced parts

Application

Ideal for mechanics and DIY enthusiasts repairing engine leaks on classic and modern Ford and Mercury vehicles. Commonly used during engine rebuilds, head gasket replacements, or when addressing corrosion in the engine block.

Fitment Notes

  • Compatible with Ford models from years 1958 to 1977 and 2000 to 2002
  • Compatible with Mercury models from years 1961 to 1970
  • Replaces Ford part number 353001S and Pioneer part number EPC-92
  • Verify vehicle compatibility using the part number 555-054 before purchase

Why Choose Dorman - Autograde?

  • Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
  • Products are backed by a team of product experts in the United States
  • Built with quality materials to stand up to daily driving demands
  • Delivers proven aftermarket solutions that keep your vehicle operating correctly

What's in the Box

  • 10 pieces of steel reverse taper cup expansion plugs

Item Dimensions

  • Package measures 4.9 inches by 3.7 inches by 2.2 inches
  • Total package weight is 0.9 lbs
View full details

Vehicle fitment