MOPAR 2421356 Nos Connecting Rod Bearings

( Brand: Mopar ), ( Manufacturer Part Number: 2421356 ), ( Type: Connecting Rod Bearing ), ( Oe/oem Part Number: Oem ), ( Manufacturer Warranty: 1 Month ), ( Items Included: Bearing ), ( Material: Metal ), ( Vintage Part: Yes ), ( Country Of Origin: United States ), ( Performance Part: No )

Review MOPAR Chrysler Plymouth Nos Connecting Rod Bearings Oem fits X1 1960–1967

The **Mopar 2421356** is a high-performance, precision-engineered set of **connecting rod bearings** specifically designed for the **1967 Chrysler 318 cubic inch (CI) and 340 CI inline six-cylinder engines**, including models like the **Plymouth Belvedere, Satellite, GTX, and Valiant**, as well as the **Chrysler 300, Saratoga, and Newport**. These bearings are a critical component in maintaining optimal engine performance, durability, and reliability, ensuring smooth operation under heavy loads, high RPMs, and demanding driving conditions. Crafted from **high-quality, leaded bronze with a specialized aluminum-tin overlay**, these bearings are engineered to withstand the extreme pressures and heat generated within the engine s crankshaft and connecting rod assembly, reducing friction and preventing premature wear on the journal surfaces. The **interference fit design** of the bearings ensures a secure and stable installation, minimizing the risk of rotation or slippage during operation, which is particularly important in high-performance or modified engines where stress on the rod bearings is significantly increased. Whether you're restoring a classic muscle car, upgrading an engine for better power output, or performing routine maintenance to extend the lifespan of your 1967 Chrysler or Plymouth, these **OEM-specification bearings** provide the perfect balance of strength, durability, and compatibility. Built to meet or exceed the original equipment standards, they are an essential replacement part for anyone seeking to preserve the integrity and performance of their engine, ensuring that every piston stroke is efficient and free from the damaging effects of excessive wear or failure.

**Pros and Cons of buying a Mopar 2421356 Connecting Rod Bearings (1967 Chrysler/Plymouth 426 Hemi Engine)**

1. **Direct Fitment** This part is specifically designed for the 1967 Chrysler 426 Hemi engine, ensuring compatibility without modifications. It is a direct replacement for the original connecting rod bearings, which are critical for engine performance and longevity.

2. **High-Quality Material** Mopar (now part of Stellantis) is known for producing aftermarket parts that meet or exceed OEM standards. These bearings are likely made from high-quality steel or composite materials, providing durability and resistance to wear.

3. **Reliability for High-Performance Engines** The 426 Hemi is a high-stress engine, especially in drag racing, street applications, or high-mileage use. Replacing worn or damaged rod bearings prevents catastrophic engine failure, such as a rod knock, which can destroy the engine block and crankshaft.

4. **Ease of Installation** Since these are standard bearings, they can be installed by anyone with basic mechanical skills. No special tools or expertise beyond standard engine disassembly and reassembly are required.

5. **Cost-Effective Solution** Replacing rod bearings is significantly cheaper than rebuilding or replacing an entire engine. This part is a relatively low-cost fix compared to the potential cost of engine damage if bearings fail.

6. **Preventative Maintenance** If the engine shows signs of rod bearing wear (e.g., blue smoke from the exhaust, oil consumption, or unusual engine noise), replacing them proactively can extend the life of the engine and avoid more expensive repairs later.

7. **Warranty Coverage** Mopar parts often come with warranties, providing some assurance against defects in materials or workmanship.

---

1. **Labor-Intensive Installation** While the part itself is straightforward, removing and reinstalling rod bearings requires disassembling the engine, which is time-consuming and labor-intensive. This may not be feasible for those without access to a machine shop or mechanical experience.

2. **Potential for Misalignment or Improper Installation** If not installed correctly, bearings can cause premature wear or failure. Improper installation may include incorrect torque on bolts, misalignment of the rod journals, or failure to use the correct amount of oil or anti-seize compound.

3. **Hidden Damage** If the engine has been previously damaged (e.g., bent rods, scored crankshaft, or warped bearing surfaces), replacing just the bearings may not be sufficient. A full engine inspection is necessary to ensure the rest of the components are sound.

- Gasket material (for sealing the crankcase)

- Anti-seize compound

- Engine oil and filter

- Possibly new seals or bolts if they are worn

This adds to the overall cost of the repair.

5. **Risk of Contamination** If the engine is not properly cleaned during disassembly, debris (such as old bearing material or dirt) can contaminate the new bearings, leading to premature failure. This requires meticulous cleaning of all mating surfaces.

6. **Time Off the Vehicle** A full engine teardown for bearing replacement can take several hours to a full day, depending on the mechanic s experience. This downtime may be inconvenient for those who rely on their vehicle daily.

7. **Limited Longevity Without Other Maintenance** Simply replacing the bearings does not address other potential issues like oil sludge, worn piston rings, or a failing oil pump. For optimal performance, these should be addressed simultaneously if possible.

---

Replacing the connecting rod bearings (part number 2421356) on a 1967 Chrysler/Plymouth 426 Hemi engine is a **practical and cost-effective solution** for preventing engine failure, especially if the bearings are worn or damaged. The part is reliable, easy to source, and directly compatible with the engine. However, the repair requires significant labor, mechanical skill, and attention to detail to ensure proper installation. If the engine has other underlying issues, addressing them concurrently will improve long-term reliability.

For most owners, this is a **necessary repair** rather than an optional upgrade. If the engine is running poorly or showing signs of bearing wear, delaying this repair could lead to far more expensive damage. That said, if you lack mechanical experience or time, consulting a professional mechanic may be the safer option.

---

1. **Verify the Need** Confirm that the bearings are indeed the issue by checking for symptoms like rod knock, oil consumption, or blue exhaust smoke. A compression test or engine analysis can help rule out other problems.

2. **Inspect the Engine** Before purchasing the bearings, disassemble the engine enough to inspect the crankshaft, rods, and other components for damage. If any parts are worn or bent, they should be replaced simultaneously.

3. **Use High-Quality Materials** While the Mopar part is a good choice, consider upgrading to aftermarket bearings from reputable brands (e.g., Clevite, Fel-Pro, or Scat) if you want additional performance benefits or extended warranties.

4. **Follow Installation Guidelines** Clean all surfaces thoroughly, use the correct amount of anti-seize compound, and torque bolts to manufacturer specifications. Refer to a service manual or consult an expert if unsure.

5. **Consider Professional Help** If you are not comfortable with engine disassembly or reassembly, a trusted mechanic can ensure the job is done correctly. The cost of labor may be justified to avoid potential engine damage from improper installation.

6. **Maintain the Engine Post-Repair** After replacing the bearings, ensure proper oil changes with high-quality oil (e.g., synthetic) and monitor for any unusual noises or performance issues.

**Final Verdict:** Buy the Mopar bearings if you are confident in your ability to install them correctly and if the engine s other components are in good condition. For most Hemi owners facing bearing failure, this is a smart and necessary investment to keep their engine running reliably.

Details:

The product is a NOS New Old Stock Mopar connecting rod bearing with the OE/OEM part number 2421356, designed for 1960-1967 Chrysler Plymouth vehicles. Manufactured in the USA, this metal bearing comes with a 1-month manufacturer warranty and is considered vintage part. This OEM connecting rod bearing is a genuine Mopar product, making it reliable and authentic choice for restoring or maintaining the engine of classic Chrysler Plymouth vehicle.

part #: 2421356 prices

• $12.50-$30.00

specifications pistonrinro:

• for models: X1
• for makes: Chrysler, Plymouth, Mopar
• for years: 1960-1967
• brand: Mopar
• mpn: 2421356
• type: Connecting Rod Bearing
• oe/oem part number: Oem
• manufacturer warranty: 1 Month
• items included: Bearing
• material: Metal
• vintage part: Yes
• country of origin: United States
• performance part: No

seller pistonrinro:

• rating: 99.9%
• # reviews: 1367
• city: Brewton, Alabama

returns pistonrinro:

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

shipping pistonrinro:

• carrier: USPS
• cost: $6.00
• transit: 6-10 Days
• class: Standard
• service: USPS Ground Advantage
• type: Fixed

offer pistonrinro:

• options: Ship-to-home
• started: March 21, 2026
• sold: 0
• availability: In Stock
• quantity: 2

payments pistonrinro:

• credit card: Discover
• wallet: Paypal
• other

general pistonrinro:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts

Mopar 2421356 Is Similar To:

• 02525407 Mopar Chrysler Kromex Piston Ring Setoem Pn Sm Block (40.3% similar) Part number is thanks. Hello, here is an original chrysler piston ring set in box as shown. Possibly for small block...(November 13th, 2016)
• 04397636 Mopar Dodge Plymouth Forged Piston Package New Oem Box Cyl (38.6% similar) 5l 4 Cl - gas efi, A413 auto trans 1987 , 1988 DODGE grand caravan AWD fwd, 5l 4 Cl - gas efi, A413 auto trans 1987 , 1988 PLYMOUTH grand voyager AWD fwd, 5l 4 Cl - gas efi, A520 A525 5 speed manual trans LX coupe 1988 CHRYSLER Lebanon pictures you see are of the piston will get and part , look...(July 22nd, 2018)
• 1241554 Mopar Vtg Power Punch Piston Rings Chrysler (27.9% similar) Parts fit chrysler 1942-C36, C37 with 3/3 2 upper compression ring groove. Also industrial engines, C36 ind with 3/3 2 upper compression ring groove and ind. Box contains 8 rings and parts shown on. 9 up to engine no this box top has been partly torn open but it was not opened enough get the parts ...(March 25th, 2019)
• 1241624 Mopar Nos 1946 47 (21.4% similar) Parts have some tarnishing from years of storage, cosmetic only. You are buying a nos Mopar. Parts are as shown...(October 28th, 2017)
• 1241629 Mopar Plymouth Dodge Six Cylinder Pistons Nos (27.5% similar) Box is part number. Stamped on the pistons is have blemishes from age and being stored. Boxes are rough. I only have these...(July 10th, 2018)
• 1321 219 Mopar Connecting Rod Bearing (48.7% similar) New in sealed box part number 1321 219CONN. Era 1951 chrysler 8 all model's...(December 17th, 2018)
• 241 Hemi 6 Plymouth 5 55-56 Nos Forging Rod Mopar Connecting 1328781 Used 259 Dodge 53-56 1 270 1328783 Number (38.1% similar) Low deck early hem and poly engine. There are six rods here dodge coronet. Five are nos. Low deck poly engine. Fitment dodge passenger cars and trucks with a cu. It is the one pictured in the closeup. All are in Mopar boxes...(May 1st, 2015)
• 1450169-1653383 1450169-1653383 Mopar Vintage Nos Power (22.6% similar) Nos vintage Mopar power punch piston ring set comes with original depth gauge checker see above pictures P/N...(February 15th, 2018)
• 1603222 Mopar Nos Piston Pin (26.4% similar) Other information new oem original equipment manufacturer and nos new old stock parts are genuine factory. It is possible this part fits other vehicles...(October 4th, 2017)
• 1613131 Nos Mopar Pin Piston Chrysler 1956 C67 (30.6% similar) I try and describe accurately...(April 12th, 2015)
• 1636609 Connecting Rods Desoto 330 341 345 Early Hemi Vintage Mopar Scta 32 (32.7% similar) Shipping is for the lower 48 states. One 1 looks to have had engine failure on it and mushroomed over the edge. Early hem connecting rods seven 7 of the rods look good with normal wear. Forging number. You can see it in the last few pictures. All have minor rust from sitting around on the shelf. Up ...(December 2nd, 2015)