MAXPEEDINGRODS XNF4JC Engine Crankshaft Bearings Promaster 3.6L

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: XNF4JC ), ( Part Type: Bearing Engine Crankshaft ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Connecting Rod: 59mm ), ( Country Of Origin: China ), ( Fitment: Direct Replacement ), ( Full Length: 479.8mm ), ( Items Included: Bearing ), ( Main Shaft: 72mm ), ( Manufacturer Warranty: 2 Years ), ( Material: Steel ), ( Oe/oem Part Number: 05184249ag, 05184249ac, 05184249ah, 05184249af, 5184251ai, 04893934ab, 5184251af, 5184251ag, 5184251ah, 05184324ae, 197007, 4893934aa, 4893934ab ), ( Performance Part: Yes ), ( Stroke: 83mm ), ( Vintage Part: No )

Review MAXPEEDINGRODS Engine Crankshaft Bearings Promaster 3.6l fits RAM 1500 2500 3500 2014–2021

The **Maxpeedingrods XNF4JC Engine Crankshaft Bearings** are a premium, high-performance upgrade designed specifically for the **2014 2021 Dodge Ram Promaster 3.6L V6 engines** (applicable to the 1500, 2500, and 3500 models). Engineered to exceed OEM specifications, these bearings are crafted from **ultra-high-quality, precision-machined steel** and treated with a **thin-film, high-temperature coating** to ensure superior durability, reduced friction, and enhanced longevity under demanding conditions. Unlike standard aftermarket bearings, the XNF4JC series incorporates **advanced metallurgical formulations** that minimize wear while maintaining optimal oil retention, making them ideal for high-mileage applications, forced induction builds, or vehicles subjected to heavy towing, hauling, or aggressive driving. The bearings feature a **perfectly balanced fit** within the crankshaft journals, reducing parasitic drag and improving overall engine efficiency critical for maintaining peak performance in the Promaster s naturally aspirated or mildly turbocharged configurations. Whether you re looking to restore factory reliability, support a modified engine, or simply future-proof your powertrain against premature failure, these bearings deliver **unmatched strength and reliability**, backed by Maxpeedingrods reputation for precision-engineered automotive components. Installing the XNF4JC bearings is a straightforward process, requiring no special tools beyond standard engine maintenance equipment, and they are fully compatible with the Promaster s **MDS (Multi-Displacement System) variable cylinder management** system when applicable. For drivers who demand **quiet operation, extended bearing life, and peace of mind**, these bearings represent the ideal balance of performance and longevity, ensuring your 3.6L V6 remains a dependable powerhouse for years to come.

### **Pros and Cons of Buying Maxpeedingrods XNF4JC Engine Crankshaft Bearings for 2014 2021 Ram Promaster 3.6L (1500, 2500, 3500)**

1. **OEM Replacement Quality** Maxpeedingrods bearings are designed to meet or exceed OEM specifications, ensuring proper fit and performance. They are manufactured to strict tolerances, reducing the risk of premature wear or failure compared to aftermarket knockoffs.

2. **Durability and Longevity** The XNF4JC bearings are made from high-quality materials, including steel-backed and aluminum-tin (or similar) overlays, which provide excellent load-bearing capacity and resistance to heat and stress. This can extend the life of your engine, especially if you drive aggressively or tow heavy loads.

3. **Compatibility with the 3.6L Pentastar** These bearings are specifically engineered for the Chrysler 3.6L Pentastar engine (used in the Promaster), which is a high-performance, turbocharged (in some models) application. They account for the engine s unique crankshaft design and load requirements.

4. **Reduced Oil Consumption and Leakage** Properly fitted bearings minimize oil leakage and consumption, which is critical for the Pentastar s oil-wet crankshaft seals and turbocharger system. This can help maintain optimal lubrication and prevent long-term damage.

5. **Warranty and Support** Maxpeedingrods is a reputable brand with a warranty on their bearings, offering some level of protection against manufacturing defects. Their customer service is generally responsive, which can be helpful if installation issues arise.

6. **Potential Performance Benefits** If your engine has been running with worn or damaged bearings, replacing them with fresh Maxpeedingrods parts can restore smooth operation, reduce noise, and improve overall engine efficiency especially important for turbocharged applications.

7. **Ease of Installation** These bearings are designed to be straightforward to install, assuming you have the proper tools and experience. They come with clear instructions, and the fitment is typically plug-and-play for most mechanics.

---

1. **Cost** High-quality bearings like these are more expensive than generic aftermarket alternatives. For a set of crankshaft bearings, you may pay significantly more than budget options, though the price reflects the quality and longevity.

2. **Installation Complexity** Replacing crankshaft bearings requires disassembling the lower engine components (oil pan, timing chain/gear, etc.), which is a labor-intensive job. If you re not experienced with engine work, it s best left to a professional mechanic, adding to the overall cost.

3. **Potential for Counterfeit or Low-Quality Copies** Since these are premium parts, there is a risk of purchasing counterfeit or substandard replicas, especially if buying from unauthorized sellers. Always verify the seller s reputation and check for authenticity markings.

4. **Limited Availability** Depending on your location, these bearings may not be as widely stocked as more common OEM or generic aftermarket parts. You may need to order online, which could delay your project.

5. **Mixed Reviews on Fitment** While Maxpeedingrods bearings are generally well-regarded, some users report minor fitment issues or the need for additional machining (e.g., crankshaft polishing) to ensure a perfect seal. This is more common with heavily worn engines.

6. **Not a "Fix-All" Solution** If your engine has other underlying issues (e.g., turbo failure, oil leaks, or rod bearing wear), replacing just the crankshaft bearings won t resolve those problems. A full engine inspection is recommended before purchasing.

7. **Turbocharged Applications May Require Additional Considerations** The Pentastar s turbocharged models generate higher loads on the crankshaft. While these bearings are suitable, some users with high-mileage or heavily modified engines report that they may still experience wear if the engine is not properly maintained (e.g., oil changes, cooling system health).

---

Maxpeedingrods XNF4JC crankshaft bearings are an excellent choice for the 2014 2021 Ram Promaster 3.6L engine if you prioritize quality, durability, and compatibility with your vehicle s performance demands. They offer superior materials and engineering compared to many aftermarket alternatives, making them a reliable long-term solution especially for turbocharged applications. However, the higher cost and complexity of installation must be weighed against the potential benefits.

If your engine is showing signs of crankshaft bearing wear (e.g., knocking, oil consumption, or reduced power), these bearings will likely restore smooth operation and extend the engine s life. That said, they are not a standalone fix for all engine issues, so a thorough diagnostic is advisable before purchasing.

- **Buy from an authorized dealer or trusted online retailer** (e.g., Maxpeedingrods official website, RockAuto, or a reputable parts store) to avoid counterfeit products.

- **Have a mechanic inspect your engine** before purchasing to confirm that the crankshaft bearings are indeed the issue and that no other components (e.g., rods, turbo, seals) need attention.

- **Consider professional installation** if you lack experience with engine disassembly, as improper handling can lead to further damage.

- **Pair this upgrade with a full service** (oil change, filter replacement, cooling system check) to maximize the bearings lifespan and performance benefits.

- **If on a budget**, compare quotes for OEM bearings (available from Chrysler or Mopar) or other high-quality aftermarket brands (e.g., Fel-Pro, Fel-Pro X, or Clevite), though Maxpeedingrods remains a top-tier option for reliability.

For most Promaster owners running the 3.6L engine, especially those with turbocharged models or high-mileage applications, the Maxpeedingrods XNF4JC bearings are a strong recommendation for long-term engine health.

Details:

05184249AG 05184249AC 05184249AH 05184249AF 5184251AI, 04893934AB, 5184251AF, 5184251AG, 5184251AH, 05184251AI, 05184324AE, 197007 4893934AA, 4893934AB. Condition New. Fitment Type Direct Replacement. Full length :479.8mm.

Showing as the picture. Fast Shipping. Package included. Product Engine Crankshaft with Bearings for Ram ProMaster 1500 2500 3500 3.6L 2014 -2021.

NOTE:Not for PSU / ESS engines!!!, Engine code ERC/ERF. Telephone number. Material Alloy. PERFORMANCE OPTIMIZATION: Engineered to restore and enhance engine efficiency, providing smooth operation consistent power delivery for your vehicle.

Guaranteed Fitment Always the correct part. OE/Part number. ONLY FOR 3.6L Engine!, For Engine Code ERB Only. ENGINEERING EXCELLENCE: Manufactured to exceed OE specifications, ensuring perfect form and function compatibility with your vehicles engine system.

specifications cranshafengin:

• for models: 1500, 2500, 3500, Ram
• for years: 2014-2021
• brand: Maxpeedingrods
• mpn: Xnf4jc
• part type: Bearing Engine Crankshaft
• california prop 65 warning: California Prop 65 Warning
• connecting rod: 59mm
• country of origin: China
• fitment: Direct Replacement
• full length: 479.8mm
• items included: Bearing
• main shaft: 72mm
• manufacturer warranty: 2 Years
• material: Steel
• oe/oem part number: 05184249ag, 05184249ac, 05184249ah, 05184249af, 5184251ai, 04893934ab, 5184251af, 5184251ag, 5184251ah, 05184324ae, 197007, 4893934aa, 4893934ab
• performance part: Yes
• stroke: 83mm
• vintage part: No

seller cranshafengin:

• rating: 99.7%
• # reviews: 13818
• city: Rowland height, California

returns cranshafengin:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

offer cranshafengin:

• availability: In Stock
• sold: 0
• started: May 10, 2026
• quantity: 1
• options: Ship-to-home
• best offers: True

shipping cranshafengin:

• type: Fixed
• class: Standard
• transit: 4-8 Days
• service: Standard
• cost: $0.00

payments cranshafengin:

• credit card: Discover
• wallet: Apple-pay
• other

general cranshafengin:

• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
• condition: New

Maxpeedingrods XNF4JC Is Similar To:

• 1d508q Maxpeedingrods Set Cam Gear Pulley For Honda Civic Adjustable (37.9% similar) How much does delivery cost and long will it take. 7TH after APR. 1ST at 4:30AM APR. If you paid item shipped on est. Sorry no for Honda B16 cam gear fit integral civic cr-x 2ND at 5:00AM APR...(January 22nd, 2019)
• 23a5bg Maxpeedingrods Billet Crankshaft For Ford Lotus Twin Cam Elan Escort (43.2% similar) 58MM UTV connecting rod rods Conrad's for ford diuretic Mazda Mr 5MM spark ignition coil pack for Nissan skyline R33 RB25DET R34 RB26DET s2 series 2 x 6 racing connecting rods ARP2000 bolts Audi VW v6 engine. 62MM 4x connecting rods for ford x flow lotus twin cam 1600 Tc narrow journal customer ...(January 30th, 2019)
• 57tgyx Maxpeedingrods Billet Crankshaft For Ford Lotus Twin Cam Elan Escort (43.2% similar) 8l K03-029 turbo charger for Toyota corolla E90 E100 E110 AE92-AE111 clovers shock absorbed Tom Honda civic LX ex Si FA5 FG2 FG1 adj. For example, you paid at 11AM on Nov. 22MM main journal diameter 54MM rods length 3RD. 23 4x forged connecting rods fit ford flow lotus twin cam bad bldg 6l DV6TED4...(March 4th, 2019)
• Ad2xvg Maxpeedingrods Crankshaft For Ford Lotus Twin Cam Elan Escort Europa (40.9% similar) 8l K03-029 turbo charger for Toyota corolla E90 E100 E110 AE92-AE111 clovers shock absorbed Tom Pontiac Oldsmobile hydraulic retro roller lifters Honda civic LX ex Si FA5 FG2 FG1 adj. 58MM stroke 72. For example, you paid at 11AM on Nov. The same rule applies to ups 2ND day air service. 22MM main ...(March 7th, 2018)
• Ew60r9 Maxpeedingrods Crankshaft For Ford (45.1% similar) 9DCI F9Q Tom char turbocharger core for Renault Megan lacuna sci 110HP 22MM main journal diameter 54MM rods length the same rule applies to ups 2ND day air service. 9l GT1549S turbo gasket for VW golf pasta for example, you paid at 11AM on Nov. 58MM stroke 72. 8l K03-029 turbo charger for Toyota ...(January 15th, 2018)
• N1krb8 Maxpeedingrods Billet Crankshaft For (44.4% similar) Images for lotus twin cam 72. 6 TD DV6TED4 80KW 110HP turbocharger Mrs turbo charger for Mazda MVP B2500 55MM belle sale forged steel h-beam Conrad's for ford cos worth Yb turbo sierra escort rs 136. 23 wide journal billet steel crankshaft for ford lotus Kent cross flow x-flow 1600CC 77. 6HDI 90HP ...(February 5th, 2018)
• Npkle9 Maxpeedingrods Billet Crankshaft For Ford Lotus Twin Cam Elan Escort (43.2% similar) Customer consumers signed the package without any checking. Details for ford lotus twin cam 1600CC crankshaft fit elan, Corina,lotus seven, escort, Europa journal type narrow pin nose design x-flow specific rods diameter 49. 6l customer consumers could refuse to sign the package immediately if ...(February 16th, 2019)
• B3nwrz Maxpeedingrods Coolant Pipe Upgrade Repair Kit For Porsche Cayenne Turbo (35.6% similar) Coolant pipe kit 948 for Porsche cayenne 4.5 v8 2003 2004 2005 2006 . For Porsche Cayenne's sport utility 4-DOOR 4.5L v8 2003 - 2006 . For Porsche cayenne turbo sport utility 4-DOOR 4.5L v8 2003 - 2006 . For Porsche cayenne 955 3.0 TD 2967 Cm, 176 kw, 240 hp. New condition...(February 23rd, 2022)
• L6bhsf Maxpeedingrods Billet Steel Crankshaft For Toyota Corolla Stroke (45.3% similar) Fit for for Toyota Celia corolla MR2 4AG 4AGE AE86 GTS 1.6L. Crankshaft details. Stroke 77MM. H-beam connecting rods for Toyota Celia 2.0L 3SGTE 3S-GTE MR2 Conrad's APR 2000 . Front rear complete shock struts coil spring kit for Toyota corolla 2003 -2008. New condition...(May 4th, 2022)
• Maxpeedingrods C32mgf G4kj 2.4l Engine Crankshaft Conrod Piston Set For Hyundai Sonata Kia Optima (49.5% similar) Crankshaft oe#. Oe/part number. Quick, simple. Brand new, built to strict quality control standards, high metal and constructed for antitrust anti corrosion, durable stable performance long time use. It is usually behind the cars windshield or on nameplate. For Hyundai KIA G4KJ 2.4L engine. ...(January 1st, 2025)
• Maxpeedingrods L3n5rh G4kh 2.0l Turbo Engine Rebuild Kit Crankshaft Conrods Piston Set For Hyundai Kia (45.3% similar) Guaranteed fitment. Fully tested under extreme condition for heat resistance and long-life use. Quick, simple. Oe/part number. For Hyundai genesis coupe 2.0L 2008 -2016. For Hyundai KIA G4KH engine 2.0L only. Fast shipping. Pistons rings set oe#. Condition: new, fitment type: direct replacement. ...(January 1st, 2025)