Pay in installments of $149.88 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Fleece Performance Freedom Series Cylinder Head 17-23 GM 6.6L Duramax L5PGive your 2017 2023 6. 6L GM Duramax L5P the boost it deserves with the Fleece Performance Freedom Series Cylinder Head. With your choice of side or both the driver side (left) and passenger side (right), these cylinder heads are precision engineered to enhance airflow, delivering improved combustion and unlocking additional power for your truck. Whether youre hauling, towing, or just want that extra edge, this upgrade helps your Duramax breathe
Give your 2017-2023 6.6L GM Duramax L5P the boost it deserves with the Fleece Performance Freedom Series Cylinder Head. With your choice of side or both the driver side (left) and passenger side (right), these cylinder heads are precision engineered to enhance airflow, delivering improved combustion and unlocking additional power for your truck. Whether you’re hauling, towing, or just want that extra edge, this upgrade helps your Duramax breathe better and perform stronger.
Built in Fleece’s state-of-the-art Freedom Racing Engine shop, each cylinder head is crafted from a remanufactured OE casting and rigorously inspected, pressure tested, and leak tested to ensure top notch reliability. Outfitted with brand new valves, valve guides, springs, and valve seals, these heads deliver optimal performance for heavy duty or daily driving.
No core charge means an easy, hassle free upgrade. For the best fit and seal, pair with a GM head gasket (Grade C, 12727486). Take your Duramax to the next level with superior airflow, better power delivery, and the dependability to handle the toughest jobs.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 10 reviews
Sort
Product Reviews
★★★★★ 3
plastic quality
Size: 200 PCS
plastic rivets size was ok . seams like the plastic used was to hard and several broke when installing them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2025
★★★★★ 5
Right for the price
They fit just right. The car now looks newer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
★★★★★ 5
Great Replacement
The good. A perfect fit for my left turn signal lamp. 2003 BMW 330XI. Works and looks good. Has weather seal. We will see how it stands up to the Florida rain and car washes.
The bad: As you can see in the picture the right lens retainer clip came in broken, Probably damaged in shipping. No big deal I just needed the left, I'll probably just super glue it and store it as a spare.
Overall I got my moneys worth and I'm happy. Product was as described and arrived on time. I will buy from this seller again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 8, 2022
★★★★★ 3
Cheap enough to not really worry about
They fade to yellow pretty quickly, and get moisture in them. But they look good at the beginning!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026
★★★★★ 1
Incorrect bulb fitment
Lense look nice on the vehicle, but the bulb socket do not fit. Very disappointed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 31, 2025
recommand products
Timbren SES HRTOA1 Suspension Enhancement System
630.00
HKM-614483 Calming Collar for Cats and Dogs - Set of 3 or 4, Plain Design, Plastic Material
74.99
HKM-647251 Pet Mini Hip Hop Sunglasses for Small Pets - Colorful Metal Frame with Resin Lenses - 8CM
69.99
Custom White Brown Hoodie
29.99
Custom White Light Purple Hoodie
29.99