2001 Mitsubishi Pajero Rear Suspension Bolt: Replacement Guide & Part Numbers

If you own a 2001 Mitsubishi Pajero, the rear suspension bolts are critical for maintaining alignment, ride quality, and safety. Over time, these bolts can corrode, loosen, or break, especially in rust-prone areas. Replacing them requires the correct part and proper installation. This guide covers everything you need to know about the 2001 Pajero rear suspension bolt, including part numbers, specifications, and step-by-step replacement advice.

Understanding the Rear Suspension Bolt

The rear suspension on the 2001 Pajero (also known as the Montero in some markets) uses control arms, trailing links, and sway bars that are secured by bolts. The most commonly replaced bolts are:

• Lower control arm bolts (front and rear of the arm)
• Upper control arm bolts (if equipped)
• Trailing arm bolts
• Sway bar link bolts

These bolts are typically high-strength (Grade 8 or 10.9) and may include captive nuts or bushings. Using the wrong bolt can cause suspension failure or poor alignment.

Identifying the Correct Bolt for Your 2001 Pajero

Before buying, verify the exact bolt you need. The 2001 Pajero came in several trims (LS, XLS, Endeavor) and with different rear suspension configurations. The most common setup is a live rear axle with coil springs and five control arms (two lowers, two uppers, and a lateral rod). Key identifiers:

• Location: Rear lower control arm bolts are often the most stressed and prone to wear.
• Diameter and Thread: Most rear suspension bolts are M12 or M14 with a pitch of 1.25 or 1.5. Length varies from 60mm to 120mm.
• Head type: 17mm or 19mm hex head, often with a flange.

OEM Part Numbers

Mitsubishi uses specific part numbers for these bolts. Common OEM numbers for the 2001 Pajero rear suspension include:

• MR170946 – Lower control arm bolt (front) – M14x1.5x85mm
• MR170947 – Lower control arm bolt (rear) – M14x1.5x100mm
• MR208076 – Upper control arm bolt – M12x1.25x75mm
• MR170945 – Trailing arm bolt – M12x1.25x90mm
• MR280207 – Sway bar link bolt – M10x1.25x45mm

Verify these numbers with your VIN at a dealer or using online parts catalogs like Mitsubishi Parts Now or BAM Wholesale. Aftermarket equivalents are also available from brands like Dorman, Moog, or Mevotech.

Specifications and Quality Considerations

OEM bolts are typically Grade 10.9 (metric) or Grade 8 (SAE). Aftermarket bolts should meet or exceed this rating. Look for:

• Zinc or black oxide coating for corrosion resistance.
• Flanged head to distribute load.
• Pre-applied thread locker (some OEM bolts have locking patches).

Reusing old nuts is not recommended. Always replace with new nylock nuts or use thread locker on standard nuts. Torque specifications are critical – see below.

Torque Specifications for 2001 Pajero Rear Suspension Bolts

| Bolt Location | Torque (ft-lbs) | |--------------|----------------| | Lower control arm (front) | 80–95 | | Lower control arm (rear) | 80–95 | | Upper control arm | 55–70 | | Trailing arm | 60–75 | | Sway bar link | 30–40 |

*Always consult a service manual for exact values. Tighten with a torque wrench to avoid over-stressing.

Replacement Process Overview

Replacing a rear suspension bolt is a moderate DIY job. Safety first: use jack stands and never work under a vehicle supported only by a jack.

Tools Needed

• Jack and jack stands
• Socket set (17mm, 19mm, 21mm)
• Torque wrench
• Breaker bar
• Penetrating oil (like PB Blaster)
• Hammer (for seized bolts)
• New bolts and nuts

Steps for Lower Control Arm Bolt Replacement

1. Raise the vehicle and support the rear axle with jack stands. Remove the wheel.
2. Spray penetrating oil on the bolt threads and nut. Let it sit for 15 minutes.
3. Remove the nut using a breaker bar. If rusted, heat the nut with a torch (careful near fuel lines).
4. Tap the bolt out with a hammer. If stuck, use a bolt extractor or cut it off.
5. Inspect the bushing in the control arm. If worn, replace the entire arm or bushing.
6. Install the new bolt from the inside out. Apply anti-seize to threads (unless bolt has thread locker).
7. Tighten the nut snug, then torque to spec with the vehicle at ride height (axle loaded). For rear control arms, tighten with weight on the suspension to avoid pre-loading the bushings.
8. Reinstall the wheel and lower the vehicle. Test drive and check alignment.

Where to Buy Replacement Bolts

• Mitsubishi dealership – Guaranteed fit, but expensive. Takes 2-5 days.
• Auto parts stores (AutoZone, Advance Auto Parts, O'Reilly, NAPA) – Carry Dorman, Help!, and Moog hardware. Ask for “Mitsubishi Pajero rear suspension bolt” in their computer system.
• Online retailers (RockAuto, CarParts.com) – Offer OEM and aftermarket. Use part numbers above.
• Specialty fastener suppliers (McMaster-Carr) – For individual high-strength bolts if you know dimensions. Avoid generic hardware store bolts – they are not strong enough.

Cost Estimate

• OEM bolt: $8–$15 each
• Aftermarket bolt: $4–$10 each
• Nut: $1–$3
• Complete kit (4 bolts + nuts): $25–$50

Common Mistakes to Avoid

• Using the wrong grade – A grade 5 bolt will snap under load.
• Overtightening – Can strip threads or crack the bushing.
• Not replacing the nut – Old nuts lose locking ability.
• Tightening without weight on suspension – Causes premature bushing failure.
• Forgetting thread locker – Bolts can vibrate loose.

Final Recommendation

For a 2001 Mitsubishi Pajero rear suspension bolt replacement, the best approach is to identify the exact OEM part number using your VIN and purchase from a Mitsubishi dealer or a trusted aftermarket supplier like Moog. If you need a single bolt now, check local parts stores for Dorman 700-408 (lower control arm) or Moog K750125 (kit). Always replace all bolts on the same arm and torque to spec. If you are unsure about the condition of the bushings, consider a complete control arm assembly – it saves time and ensures fresh bushings.

Remember: Suspension bolts are safety-critical. Do not compromise on quality. A few extra dollars for Grade 10.9 hardware is cheap insurance against failure on the road.