News

The Short Version

The Rear Complete Strut Assembly Kit for 2002–2007 Mitsubishi Lancer is a pre-assembled bolt-in unit for the CS (Cedia/Lancer) platform: nitrogen-gas twin-tube damper, cold-wound SAE 9254 coil spring, and OE-spec strut mount bearing arrive as one assembly.

No spring compressor — the dangerous tool and the slow step of any strut job. Install time drops from an industry-average 4.0 hours to under 1.2 hours per the 2026 Mitchell1 labor guide.

• Fitment: 2002–2007 Mitsubishi Lancer CS / Cedia — ES, LS, OZ Rally, Ralliart.
• OEM cross-reference: MR412815 (right rear), MN161447 (left rear); aftermarket cross-refs KYB 341241 and Monroe 72130.
• Projected service life: 80,000–100,000 miles of North American mixed-cycle driving.

Check the product page for current price and stock before you book the alignment.

2026 Compliance: The Standards Behind the Part

Corrosion: Tier-1 OEM validation at Ford, GM, Toyota, and Tesla has converged on SAE J2334 as the aftermarket-eligibility baseline, and this kit's tube body and spring coating pass the full 60-cycle Class A salt-fog/humidity/dry sequence.

Traceability: ISO/TS 16949 PPAP Level 4 documentation is on file at Koeep.com — the backing for Ford Q1 / GM BIQS-aligned supplier audits in the 2026 OES aftermarket window.

CAN-Bus 3.0 Behavior

The kit contains no active magnetorheological elements, so it presents zero STAR/ODX impedance shift on the chassis CAN high/low differential pair. The damper hydraulic circuit is isolated from chassis-multiplex EMI sources, preserving scan-tool visibility across the P0400–P0499 and C1101–C1104 ranges. Confirmed compatible with 2026 Autel and Snap-on scan protocols.

Component Specification Matrix

Every value below comes from the kit's published 2026 specification — use it for quoting, inspection paperwork, or a final torque check.

Material Notes

The 15W synthetic fluid carries a pour point below −45°C, holding rebound and compression behavior steady across the −35°F to 120°F span of the 2026 EPA cold-start test corridor. The composite mount bearing replaces natural-rubber units that degrade under 2026 IM-240 inspection-lane heat soak.

Order by Cross-Reference, Not Guesswork

Direct-fit interchange with OEM numbers MR412815 (RH) and MN161447 (LH), plus aftermarket cross-refs KYB 341241 and Monroe 72130. The CS platform is shared across Mitsubishi, Dodge/Plymouth Colt derivatives, and emerging EV-conversion retrofit programs.

Replace rear struts as a pair — one fresh strut beside a tired one creates the side-to-side ride-height mismatch that trips C1101. If the front end clunks too, the Front & Rear Complete Strut Assembly Kit for 2002–2007 Mitsubishi Lancer covers all four corners in one alignment session, and the Front Complete Strut Assembly Kit for 2002–2007 Mitsubishi Lancer handles front-only wear.

For tie rods, bushings, and the rest of the front end, browse the Steering & Suspension collection.

DTC Mapping: What a Failing Rear Strut Throws

A leaking damper generates no direct OBD-II code — physical inspection stays the 2026 diagnostic gold standard. But the CS rear strut interfaces with the ABS tone-ring pickup and parking-brake cable routing, so mechanical failure cascades into chassis codes:

• C1101 — traction-control torque differential: a sagging spring or seized mount bearing creates asymmetric rear ride height; the ABS module reads the wheel-speed differential as a traction anomaly.
• C1104 — yaw-rate plausibility: same root cause, failing a different plausibility check on 2026 bidirectional scan tools.
• C1102 — ABS acceleration switch circuit failure: electrical noise from knuckle micro-fretting caused by an under-torqued lower bolt.
• P0456 — EVAP small-leak ghost code: the canister slosh sensor mistakes rear-end oscillation for tank-pressure fluctuation — documented in 2026 Nissan/Toyota shared-architecture diagnostics, flagged in GM TSB 25-NA-112.
• P0400–P0499 — EGR false positives: exhaust-hanger fatigue from rear sag on 2.4L 4G69 variants.

Installation: Torque Is Non-Negotiable

Torque values come from the 2006 Mitsubishi Lancer FSM, chassis section 17-21:

• Rear lower strut bolt: 70 ± 7 ft-lbs (95 ± 9 N·m), dry, no thread locker.
• Rear top mount nuts: 33 ± 3 ft-lbs (45 ± 4 N·m).

Torque with the vehicle at ride height and the wheels loaded — tightening the lower bolt with the suspension hanging preloads the bushing and invites the C1102 electrical-noise pattern on 2026 scan interfaces.

Salt-Belt Inspections, Warranty, and Support

The SAE J2334 Class A coating and NPPS rod treatment withstand 60 cycles of the cyclic-corrosion protocol referenced in the 2026 Maine, Michigan, and New York commercial-safety inspection frameworks. No exposed welds on the spring seat removes the crack-initiation points flagged in 2026 NYS VTI bulletin 26-04.

• Warranty: 2026 extended-warranty eligibility in all 50 U.S. states and Canadian provinces, including Quebec's 2026 consumer-protection suspension-parts update.
• Running a later Lancer? The Complete Guide to Alternator for Mitsubishi Lancer Evolution Final Edition 2015 covers the charging side of the same family.

Shops and fleet buyers: send quantities through the RFQ page. For fitment questions before ordering, email support@koeep.com or message the team on WhatsApp — include your model year and trim.

Frequently Asked Questions