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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Jeep HD Knurled Front Ball Joint Set Dana 30/44 2 Uppers 2 Lowers (SYN4120)Replace your Jeep's factory ball joints with Synergy MFG's Dana 30 44 Heavy Duty Ball Joint Set. These ball joints employ a metal on metal design to improve durability and performance. A must for vehicles with lifts and larger tires. Get rid of that steering wander and play caused by loose or worn out ball joints. Fits: 97 06 Wrangler TJ and 04 06 Wrangler Unlimited TJL 90 95 Wrangler YJ 90 01 Cherokee XJ 90 92 Comanche MJ 93 98 Grand Cherokee ZJ
Replace your Jeep's factory ball joints with Synergy MFG's Dana 30/44 Heavy Duty Ball Joint Set. These ball joints employ a metal on metal design to improve durability and performance. A must for vehicles with lifts and larger tires. Get rid of that steering wander and play caused by loose or worn out ball joints.
Fits:
- 97-06 Wrangler TJ and 04-06 Wrangler Unlimited TJL
- 90-95 Wrangler YJ
- 90-01 Cherokee XJ
- 90-92 Comanche MJ
- 93-98 Grand Cherokee ZJ
Features:
- Compatible with all aftermarket axle shafts (including RCV) with no modifications needed
- Fully Greasable metal on metal design for prolonged life
- Ball Joint bearing surface area is considerably larger than stock due to elimination of the inner nylon liner for a longer lasting joint
- Ball joint housing is manufactured from sintered graphite, bronze, and 1045 steel for a strong, smooth, bearing surface
- Ball joint stud is manufactured from induction heat treated 4140 steel for maximum strength and smooth operation
- Ball joint dust boot is made from wear/tear resistant black nitro-butile rubber (NBR)
- 12 Month Unlimited-Warranty (see warranty information)
- Synergy High Performance Grease (4119) recommended
Notes:
- Metal on metal ball joints require a small break-in period of typically 100-500 miles to fully seat the bearing surfaces.
- Knurled ball joints required when replacing knurled ball joints that have enlarged the axle end forging bores
- Non-Knurled ball joints recommended for replacing non-knurled ball joints
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
4.1 ★★★★★
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Product Reviews
★★★★★ 5
Excellent Deal
Size: Eufy A-21Packs
Great deal - pricing is fantastic making it easy to keep my little robo-vaccum running smoothly. The replacement parts are super easy to click into place - and having these multi packs will last a long time. Packaging is secure and the delivery was quick. The brush quality is excellent and function well with the exsisting parts already in place. These are not 'remakes' or 'versions' but an exact match to the originals. The replacement parts keep the same level of low noise and look intact. No guessing required. I'd recommend these for anyone with an Eufy RoboVac.
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Reviewed in the United States on January 14, 2026
★★★★★ 5
Stock up!
Size: Eufy A-21Packs
Exactly what I needed! Works great!
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Great value
Size: Eufy B-18Packs
This 18-pack of replacement parts for the eufy L50 and L60 robot vacuums is very handy. It includes everything needed to keep the vacuum running smoothly, making maintenance easy and convenient. Great value for anyone who owns these models! better price than the OEM.
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Reviewed in the United States on March 30, 2026
★★★★★ 5
GOOD
Style: 28Pack Eufy Omni C20 Accessories
The kit includes several useful pieces and helped me replace accessories I already had worn out. I liked that everything came organized and it was easy to find each part. Some pieces feel sturdier than others, but overall it does the job well and it is convenient having everything together in one package.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Buena calidad precio
Style: 28Pack Eufy Omni C20 Accessories
Precio beneficio me parece un paquete bastante completo para hacer los mantenimientos. En cuanto a tamaño calidad y funcionamiento no hay queja (salvo por del atornillador que es como de mentira y se desarmo al tratar de aflojar el tornillo y no es de la medida correcta).
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Reviewed in the United States on November 8, 2025