FORD 6.6L/400 Pistons & Piston Rings Engines & Components

D.S.S. FX-Series Forged 2618 Alloy Pistons with XR Wrist Pins 3-3971-4040

D.S.S. FX-Series Forged 2618 Alloy Pistons with XR Wrist Pins 3-3971-4040

Piston Set, 400M SBF 400M 3-FX Series -13cc Dish Top Boss/Canted Piston Set. 4.040 bore

Part Number: DMS-3-3971-4040

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons with XR Wrist Pins 3-3975-4040

Piston Set, 400M SBF 400M 3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Piston Set. 4.040 bore

Part Number: DMS-3-3975-4040

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-3975-4060

Piston Set, 400M SBF 400M K3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Piston Set. 4.060 bore

Part Number: DMS-K3-3975-4060

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-3975-4000

Piston Set, 400M SBF 400M K3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Piston Set. 4.000 bore

Part Number: DMS-K3-3975-4000

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-3970-4040

Piston Set, 400M SBF 400M K2-FX Series -3cc Flat Top Boss/Canted Piston Set. 4.040 bore

Part Number: DMS-K2-3970-4040

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-3970-4000

Piston Set, 400M SBF 400M K2-FX Series -3cc Flat Top Boss/Canted Piston Set. 4.000 bore

Part Number: DMS-K2-3970-4000

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-3971-4030

Piston Set, 400M SBF 400M K3-FX Series -13cc Dish Top Boss/Canted Piston Set. 4.030 bore

Part Number: DMS-K3-3971-4030

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

Hastings Steel Series Performance Ring Sets SM8556S055

Engine Piston Ring Set, Single Cyl Ring Set; Plasma Moly

Part Number: HSN-SM8556S055

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

...Loading

Estimated Ship Date: May 7, 2026 if ordered today

Hastings Steel Series Performance Ring Sets SM8556S025

Engine Piston Ring Set, Single Cyl Ring Set; Plasma Moly

Part Number: HSN-SM8556S025

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

...Loading

Estimated Ship Date: May 7, 2026 if ordered today

Hastings Premium Ductile Ring Sets 2M5508025

Engine Piston Ring Set, 8-Cyl Ring Set; Plasma Moly

Part Number: HSN-2M5508025

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

...Loading

Estimated Ship Date: May 7, 2026 if ordered today

Hastings Premium Ductile Ring Sets 2M8521045

Engine Piston Ring Set, 8-Cyl Ring Set; Plasma Moly

Part Number: HSN-2M8521045

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

...Loading

Estimated Ship Date: May 7, 2026 if ordered today

Hastings Premium Ductile Ring Sets 2M5540005

Engine Piston Ring Set, 8-Cyl Ring Set; Plasma Moly

Part Number: HSN-2M5540005

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

...Loading

Estimated Ship Date: May 7, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-3971-4040

Piston Set, 400M SBF 400M 2-FX Series -13cc Dish Top Boss/Canted Piston Set. 4.040 bore

Part Number: DMS-2-3971-4040

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-3970-4040

Piston Set, 400M SBF 400M 2-FX Series -3cc Flat Top Boss/Canted Piston Set. 4.040 bore

Part Number: DMS-2-3970-4040

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-3971-4030

Piston Set, 400M SBF 400M 2-FX Series -13cc Dish Top Boss/Canted Piston Set. 4.030 bore

Part Number: DMS-2-3971-4030

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-3970-4000

Piston Set, 400M SBF 400M K1-FX Series -3cc Flat Top Boss/Canted Piston Set. 4.000 bore

Part Number: DMS-K1-3970-4000

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

Hastings Premium Ductile Ring Sets 2M5508005

Engine Piston Ring Set, 8-Cyl Ring Set; Plasma Moly

Part Number: HSN-2M5508005

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Sealed Power Plasma-Moly Piston Ring Sets R93435

5 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Enginetech Piston Ring Sets M40058-030

Engine Piston Ring Set 53-03 AMC/BUI/CAD/CHV/CHR/DOD/FRD/GM/GMC/JEP/LIN/MER/OLD/PLY/PON

Part Number: EGN-M40058030

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

...Loading

Estimated Ship Date: May 15, 2026 if ordered today

Enginetech Piston Ring Sets M40058-020

Engine Piston Ring Set 53-03 AMC/BUI/CAD/CHV/CHR/DOD/FRD/GM/GMC/JEP/LIN/MER/OLD/PLY/PON

Part Number: EGN-M40058020

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

...Loading

Estimated Ship Date: May 15, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-3971-4060

Piston Set, 400M SBF 400M K3-FX Series -13cc Dish Top Boss/Canted Piston Set. 4.060 bore

Part Number: DMS-K3-3971-4060

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons with XR Wrist Pins 3-3970-4040

Piston Set, 400M SBF 400M 3-FX Series -3cc Flat Top Boss/Canted Piston Set. 4.040 bore

Part Number: DMS-3-3970-4040

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-3971-4030

Piston Set, 400M SBF 400M K2-FX Series -13cc Dish Top Boss/Canted Piston Set. 4.030 bore

Part Number: DMS-K2-3971-4030

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-3971-4040

Piston Set, 400M SBF 400M K2-FX Series -13cc Dish Top Boss/Canted Piston Set. 4.040 bore

Part Number: DMS-K2-3971-4040

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-3971-4000

Piston Set, 400M SBF 400M K2-FX Series -13cc Dish Top Boss/Canted Piston Set. 4.000 bore

Part Number: DMS-K2-3971-4000

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

Hastings Piston Ring Sets 139S080

Engine Piston Ring Set, Single Cyl Ring Set; Phosphate

Part Number: HSN-139S080

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

...Loading

Estimated Ship Date: May 7, 2026 if ordered today