How should the piston rings be installed and what steps need to be followed for checking and ensuring proper end gaps on Ford Expedition?

Before installing the new piston rings, the ring end gaps must be checked, assuming that the piston ring side clearance has been verified correct. Lay out the piston/connecting rod assemblies and the new ring sets to match them with the same piston and cylinder during the end gap measurement and engine assembly. Insert the top ring into the first cylinder, ensuring it is square with the cylinder walls by pushing it in with the top of the piston, positioning it near the bottom of the cylinder. To measure the end gap, slip feeler gauges between the ends of the ring until a gauge equal to the gap width is found, ensuring the feeler gauge slides between the ring ends with slight drag. Compare the measurement to the specifications; if the gap is larger or smaller than specified, double-check the rings for correctness. Excess end gap isn't critical unless it exceeds 0.040-inch, so verify the correct rings for your engine. Repeat the procedure for each ring in the first cylinder and the remaining cylinders, keeping rings, pistons, and cylinders matched. Once the ring end gaps have been checked and corrected, install the rings on the pistons, starting with the oil control ring, which consists of three components. Slip the spacer/expander into the groove, followed by the lower side rail, ensuring not to use a piston ring installation tool to avoid damage. Install the upper side rail in the same manner and check that both side rails can turn smoothly in the ring groove. Next, install the middle ring, ensuring the stamped mark faces up, and use a piston ring installation tool to slide it into the middle groove. Finally, install the top ring in the same manner, ensuring the mark is facing up, and repeat the procedure for the remaining pistons and rings.

Genuine Ford Expedition Piston Ring Set

Piston Ring

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18 Piston Ring Sets found

View related parts
Ford Expedition Kit - Piston Ring
Part Number: 6L3Z-6148-A
$34.43 MSRP: $50.33
You Save: $15.90 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Ring, Piston Ring Set
- Replaces: 2L3Z-6148-GA, 2L3Z-6148-LA, 2L3Z-6148-AA, 2L3Z-6148-DA, F5AZ-6148-A, F7AZ-6148-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2014 Ford Expedition | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI, 8 Cyl 5.4L, 8 Cyl 5.4L Modular SOHC | 4-Speed Automatic Transmission 4R70W (AODE), 4-Speed Automatic Transmission 4R75E Livonia, 4-Speed Automatic Transmission AODEW/4R75E W/TSS, 4AT 4R100, 4AT 4R70W, 4AT 4R75W, 4AT E4OD, 6-Speed Automatic Transmission (6R75), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 6L3Z-6148-C
$151.80 MSRP: $230.00
You Save: $78.20 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Ring
- Replaces: 2L3Z-6148-FA, 2L3Z-6148-NA, 2L3Z-6148-JA, 2L3Z-6148-CA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2014 Ford Expedition | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI, 8 Cyl 5.4L, 8 Cyl 5.4L Modular SOHC | 4-Speed Automatic Transmission 4R70W (AODE), 4-Speed Automatic Transmission 4R75E Livonia, 4-Speed Automatic Transmission AODEW/4R75E W/TSS, 4AT 4R100, 4AT 4R70W, 4AT 4R75W, 4AT E4OD, 6-Speed Automatic Transmission (6R75), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Expedition Kit - Piston Ring
Part Number: BL3Z-6148-C
$27.13 MSRP: $39.67
You Save: $12.54 (32%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Piston Ring
- Replaces: BL3Z-6148-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2017 Ford Expedition | 6 Cyl 3.5L GTDI | 4AT 4R75W, 4-Speed Automatic Transmission 4R70W (AODE), 4-Speed Automatic Transmission 4R75E Livonia, 4-Speed Automatic Transmission AODEW/4R75E W/TSS, 6-Speed Automatic Transmission (6R75), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 2L3Z-6148-AA
$34.43 MSRP: $50.33
You Save: $15.90 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 6L3Z-6148-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2002 Ford Expedition | 8 Cyl 5.4L | 4AT 4R100, 4AT 4R70W, 4AT E4OD
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 2L3Z-6148-GA
$34.43 MSRP: $50.33
You Save: $15.90 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 6L3Z-6148-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2004 Ford Expedition | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 4AT 4R100, 4AT 4R70W, 4AT 4R75W, 4-Speed Automatic Transmission 4R70W (AODE), 4-Speed Automatic Transmission 4R75E Livonia, 4-Speed Automatic Transmission AODEW/4R75E W/TSS, 6-Speed Automatic Transmission (6R75), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 2L3Z-6148-DA
$34.43 MSRP: $50.33
You Save: $15.90 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 6L3Z-6148-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2002 Ford Expedition | 8 Cyl 4.6L | 4AT 4R100, 4AT 4R70W
View related parts
Ford Expedition Kit - Piston Ring
Part Number: BL3Z-6148-D
$75.13 MSRP: $136.83
You Save: $61.70 (46%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Ring
- Replaces: BL3Z-6148-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2017 Ford Expedition | 6 Cyl 3.5L GTDI | 4AT 4R75W, 4-Speed Automatic Transmission 4R70W (AODE), 4-Speed Automatic Transmission 4R75E Livonia, 4-Speed Automatic Transmission AODEW/4R75E W/TSS, 6-Speed Automatic Transmission (6R75), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Expedition Kit - Piston Ring
Part Number: F7AZ-6148-CA
$32.01 MSRP: $43.74
You Save: $11.73 (27%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2000 Ford Expedition | 8 Cyl 4.6L | 4AT 4R100, 4AT 4R70W, 4AT E4OD
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 2L3Z-6148-CA
$151.80 MSRP: $230.00
You Save: $78.20 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 6L3Z-6148-C
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2002 Ford Expedition | 8 Cyl 5.4L | 4AT 4R100, 4AT 4R70W, 4AT E4OD
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 2L3Z-6148-FA
$151.80 MSRP: $230.00
You Save: $78.20 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 6L3Z-6148-C
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2002 Ford Expedition | 8 Cyl 4.6L | 4AT 4R100, 4AT 4R70W
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 2L3Z-6148-JA
$151.80 MSRP: $230.00
You Save: $78.20 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 6L3Z-6148-C
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2004 Ford Expedition | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 4AT 4R100, 4AT 4R70W, 4AT 4R75W, 4-Speed Automatic Transmission 4R70W (AODE), 4-Speed Automatic Transmission 4R75E Livonia, 4-Speed Automatic Transmission AODEW/4R75E W/TSS, 6-Speed Automatic Transmission (6R75), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 6L3Z-6148-B
$125.36 MSRP: $228.33
You Save: $102.97 (46%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Ring, Piston Ring Set
- Replaces: 2L3Z-6148-HA, 2L3Z-6148-BA, 2L3Z-6148-MA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2014 Ford Expedition | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI, 8 Cyl 5.4L, 8 Cyl 5.4L Modular SOHC | 4-Speed Automatic Transmission 4R70W (AODE), 4-Speed Automatic Transmission 4R75E Livonia, 4-Speed Automatic Transmission AODEW/4R75E W/TSS, 4AT 4R100, 4AT 4R70W, 4AT 4R75W, 4AT E4OD, 6-Speed Automatic Transmission (6R75), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Expedition Piston Ring Kit
Part Number: HL3Z-6148-C
$95.53 MSRP: $139.67
You Save: $44.14 (32%)
ADD TO CART
Product Specifications
- Other Name: Kit - Piston Ring; Piston Ring
- Manufacturer Note: 0.50MM O/S
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2021 Ford Expedition | 6 Cyl 3.5 L GAS, 6 Cyl 3.5L GTDI | 10-Speed Automatic Transmission (10R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Expedition KIT - PISTON RING
Part Number: ML3Z-6148-D
$31.71 MSRP: $45.17
You Save: $13.46 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Ring
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2022-2023 Ford Expedition | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS
View related parts
Ford Expedition Kit - Piston Ring
Part Number: F7AZ-6148-AA
$34.43 MSRP: $50.33
You Save: $15.90 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 6L3Z-6148-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2000 Ford Expedition | 8 Cyl 4.6L | 4AT 4R100, 4AT 4R70W, 4AT E4OD
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 2L3Z-6148-BA
$125.36 MSRP: $228.33
You Save: $102.97 (46%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 6L3Z-6148-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2002 Ford Expedition | 8 Cyl 5.4L | 4AT 4R100, 4AT 4R70W, 4AT E4OD
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 2L3Z-6148-HA
$125.36 MSRP: $228.33
You Save: $102.97 (46%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 6L3Z-6148-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2004 Ford Expedition | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 4AT 4R100, 4AT 4R70W, 4AT 4R75W, 4-Speed Automatic Transmission 4R70W (AODE), 4-Speed Automatic Transmission 4R75E Livonia, 4-Speed Automatic Transmission AODEW/4R75E W/TSS, 6-Speed Automatic Transmission (6R75), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Expedition Kit - Piston Ring
Part Number: 2L3Z-6148-EA
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2002 Ford Expedition | 8 Cyl 4.6L | 4AT 4R100, 4AT 4R70W

Ford Expedition Piston Ring Set

Piston Ring Set: This is found in Ford Expedition vehicles where it acts to contain combustion chamber, burner for the fuel air mixture, a preventer of gas escape as well as controlling the engine oil consumption. It is normal to come across these rings made from case iron or steel or other related material and their function lies in withstanding minimum friction at the same time holding the sealing capability paramount to the operation of the engine. The current designs of the Ford Expedition Piston Ring Sets are comparatively thinner as compared to the older models and are favored due to the decrease in the friction levels and increase in the sealing capacity. Some of these development are diversified coatings, plasma-moly &chrome coatings that give it more durability &heat resistance. End-users will benefit from the use of two compression rings and one oil control ring for each piston to enhance performance and control oil. In a nut shell, the Piston Ring Set is a vital component that is crucial for a Ford Expedition's engines functionality and durability.

We provide a wide range of Ford Expedition Piston Ring Set at the best prices possible. If you need Ford Expedition Piston Ring Set, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your door step with a fast delivery service.

Ford Expedition Piston Ring Set Parts Questions & Experts Answers

Kit - Piston Ring
2L3Z-6148-AA
Q: How should the piston rings be installed and what steps need to be followed for checking and ensuring proper end gaps on Ford Expedition?
A: Before installing the new Piston rings, the ring end gaps must be checked, assuming that the piston ring side clearance has been verified correct. Lay out the piston/connecting rod assemblies and the new ring sets to match them with the same piston and cylinder during the end gap measurement and engine assembly. Insert the top ring into the first cylinder, ensuring it is square with the cylinder walls by pushing it in with the top of the piston, positioning it near the bottom of the cylinder. To measure the end gap, slip feeler gauges between the ends of the ring until a gauge equal to the gap width is found, ensuring the feeler gauge slides between the ring ends with slight drag. Compare the measurement to the specifications; if the gap is larger or smaller than specified, double-check the rings for correctness. Excess end gap isn't critical unless it exceeds 0.040-inch, so verify the correct rings for your engine. Repeat the procedure for each ring in the first cylinder and the remaining cylinders, keeping rings, pistons, and cylinders matched. Once the ring end gaps have been checked and corrected, install the rings on the pistons, starting with the oil control ring, which consists of three components. Slip the spacer/expander into the groove, followed by the lower side rail, ensuring not to use a piston ring installation tool to avoid damage. Install the upper side rail in the same manner and check that both side rails can turn smoothly in the ring groove. Next, install the middle ring, ensuring the stamped mark faces up, and use a piston ring installation tool to slide it into the middle groove. Finally, install the top ring in the same manner, ensuring the mark is facing up, and repeat the procedure for the remaining pistons and rings.