Catalog

SSANGYONG 1729970094 CHAIN SUB-ASSY

SSANGYONG 1729970094 CHAIN SUB-ASSY

Product Specifications

Product quality
OEM Equivalent Grade
starstarstar
Wholesale price USD $7.97
Wholesale price CNY ¥54
bolt MOQ (Minimal order)
1 pcs
local_shipping Production time
20-50 days
package_2 Shipping Weight: —
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SSANGYONG 1729970094
SSANGYONG 1729979094
MILES AB10325
Overview & Operating Principle
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The CHAIN SUB-ASSY is the roller or silent chain that drives the camshaft or camshafts from the crankshaft sprocket at the precise 2:1 speed reduction ratio required to synchronise valve opening events with piston position throughout the engine's operating speed range, maintaining the valve timing accuracy that determines combustion efficiency, power output, emissions compliance, and on interference engines, the physical clearance between the valves and piston crown. Roller chains use cylindrical rollers on hardened pins between inner and outer link plates that engage the teeth of the crankshaft and camshaft sprockets at their pitch diameter; silent (inverted tooth) chains use shaped link plates with internal teeth that mesh with the sprocket profiles more quietly and at lower dynamic loads at high RPM. The chain runs in a pressurised oil bath inside the timing cover, continuously lubricated by the engine's oil pressure circuit through dedicated jets or spray bars directed at the chain running faces; this lubrication both lubricates the pin-to-bushing and roller-to-sprocket contact zones and provides a hydraulic film that cushions the chain's engagement with each sprocket tooth at high engine speeds. The hydraulic chain tensioner — a spring-loaded or oil-pressure-actuated piston that bears against the slack side guide — automatically compensates for chain elongation from pin wear as the chain accumulates mileage, maintaining correct chain tension throughout its service life until the tensioner reaches its maximum extension limit.

This unit — SSANGYONG 1729970094 — is manufactured to OEM-equivalent specifications: chain pitch (distance between pin centres), link plate width and thickness, pin and bushing hardness and surface treatment, roller diameter and hardness, total chain length in links, and tensile strength are matched to the original part. Supplied as a direct replacement for standard fitment. Available wholesale from 7.97 USD, MOQ 1 pcs, production lead time 20-50 days.

Timing chains fail through pin and bushing wear elongation — the chain's effective pitch increases as each pin wears within its bushing, producing a chain that no longer meshes correctly with the sprocket tooth profiles and advances the camshaft timing retard progressively until the tensioner reaches its travel limit and the chain begins to rattle; through link plate fatigue fracture under sustained high-load cycles on engines with extended oil change intervals that degrade the lubricant film; and through catastrophic link fracture from impact with a failed tensioner or guide that allows the chain to make uncontrolled contact with the timing cover. Chain elongation is the most common failure mode and produces a characteristic cold-start rattle from the timing cover area that clears within seconds as oil pressure builds and the tensioner extends — this rattle indicates the tensioner's reserve travel is nearly exhausted and chain replacement is overdue.

Symptoms & Diagnostics
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Rattling noise from the timing cover area on cold start that disappears within 3–5 seconds of the engine running — the most characteristic symptom of chain elongation; with the tensioner at near-maximum extension, the cold oil's higher viscosity prevents the tensioner from extending instantaneously, allowing the slack chain to rattle against the guide until oil pressure builds; this symptom indicates the chain is at the end of its service life and replacement is urgently required before the tensioner bottoms out.
Check Engine light with camshaft position timing codes P0011, P0012, P0021, P0022 combined with a confirmed serviceable VVT phaser — an elongated chain retards the camshaft position relative to the crankshaft beyond the range the VVT phaser can correct; the ECU detects the phase error as a timing fault; a chain that has stretched sufficiently to trigger these codes has shifted valve timing enough to measurably affect combustion efficiency and emissions.
Continuous rattling or clattering from the timing cover area at all engine speeds that does not clear after warm-up — the tensioner has reached its maximum extension and can no longer compensate for chain slack; the chain is slapping against the guide rail continuously; this stage represents an immediate risk of chain jump — a single tooth advancement on either camshaft sprocket causes valve-to-piston contact on interference engines with catastrophic internal damage.
Engine that starts and immediately stalls or runs very roughly with multiple misfire codes on all cylinders — the chain has jumped one or more teeth on a camshaft sprocket, producing valve timing error that prevents normal combustion; on interference engines this condition almost certainly means valve-to-piston contact has already occurred; do not attempt to restart the engine until the timing system has been inspected.
Progressive loss of power and fuel economy development over 10,000–20,000 km without any fault codes — moderate chain elongation retarding the camshaft from its designed advance position reduces volumetric efficiency and combustion phasing slightly but not enough to trigger fault codes; the power loss is gradual and the driver may not notice until a fresh service confirms the timing is retarded; timing chain measurement during a service interval check can detect this before the tensioner is exhausted.
Metal particles visible in the engine oil at drain, particularly fine iron swarf with a magnetic quality — chain roller or link plate surface wear is generating iron particles that circulate through the oil system; large quantities of iron swarf indicate accelerated chain wear from oil starvation, contaminated oil, or extended oil change intervals; investigate the root cause before refitting a new chain as the same conditions will destroy the replacement at an accelerated rate.
Logistics & Customs
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International HS Code
7315.11
EAEU Customs Code (TN VED)
7315 11 000 0
Typical Net Weight
Country of Manufacture
China
Standard MOQ
1 pcs
Production Lead Time
20-50 days
Always verify the exact 8-digit or 10-digit subheading with your customs broker for the destination country, as tariff schedules and duty rates vary by jurisdiction.
Installation Tips
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  1. Lock the engine at TDC on cylinder 1 compression stroke and install all crankshaft and camshaft locking tools before removing any timing component — the camshafts are under valve spring load at multiple positions simultaneously; removing the chain without locking tools allows the springs to rotate both camshafts from their timed positions, making correct re-timing impossible without returning to TDC and verifying all timing marks; on interference engines an incorrectly timed engine will destroy valves on the first compression stroke.
  2. Replace the chain by working in the correct link-by-link transfer sequence if the engine design does not allow the chain to be threaded directly — connect the new chain to the old chain's end link with a joining link, carefully rotate the crankshaft by hand to transfer the new chain through the system as the old chain is removed, confirming each sprocket remains correctly positioned on its timing mark throughout the transfer; never allow any sprocket to rotate without the chain maintaining its timing position.
  3. Inspect every guide rail and tensioner shoe surface after removing the old chain — nylon guide rails that have been in contact with an elongated chain develop grooves and wear steps that prevent the new chain from running smoothly and can cause the new chain to skip teeth under dynamic load; replace all guide rails showing more than 1 mm groove depth; never fit a new chain to worn guides.
  4. Flush the timing chain oil jets with clean engine oil or compressed air before installing the new chain — elongated chain wear deposits fine iron swarf in the oil passages leading to the timing chain jets; this swarf will be immediately delivered to the new chain's pin and bushing contact zones on the first start, causing accelerated wear that reproduces the original failure within a fraction of the normal chain service life.
  5. Verify all timing mark alignments with the locking tools installed after fitting the new chain and before removing the locking tools — confirm the crankshaft TDC mark, all camshaft timing marks, and any balance shaft marks are precisely aligned to their reference positions with zero angular error; remove the locking tools and rotate the crankshaft by hand through two complete revolutions, recheck all marks — both must return to their exact TDC positions; any deviation of even a single tooth requires immediate correction before the engine is started.
  6. Install the new CHAIN SUB-ASSY (SSANGYONG 1729970094), refit the timing cover with new front crankshaft and camshaft seals, fill with fresh engine oil of the correct specification and viscosity, prime the oil system by cranking without spark for 5 seconds before starting, start the engine and immediately listen for any timing chain noise, run to operating temperature, check for oil leaks at the timing cover, and perform a scan tool check for camshaft timing codes before returning the vehicle to service.
Tools: engine timing lock tool set (application-specific crankshaft and camshaft locking pins or plates), timing chain joining link tool, new timing cover gasket and front crankshaft seal, new camshaft seals, torque wrench, fresh engine oil, OBD-II scanner for post-installation VVT timing verification.
Frequently Asked Questions
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Must all timing chain kit components — tensioner, guides, and sprockets — be replaced simultaneously with the chain?
Yes — replacing only the chain while retaining worn tensioner, guides, and sprockets is not a complete repair and will result in repeat failure within a short interval. A hydraulic tensioner that has been at or near its maximum extension for an extended period has a weakened spring and worn piston seal that cannot maintain adequate tension on a new chain; a tensioner piston that does not hold pressure allows the chain to go slack on every stop-start cycle. Guide rails worn by the elongated old chain have groove profiles that accelerate wear on the new chain. Sprocket teeth worn by the elongated chain have a loaded tooth flank profile that does not match the new chain's roller geometry, causing uneven load distribution. Always replace the complete timing kit — chain, tensioner, all guides, and where accessible, all sprockets — in a single service operation. ok.parts supplies timing chains individually and as complete kit sets at wholesale MOQ from 7.97 USD per unit.
Is ECU adaptation or VVT relearning required after timing chain replacement?
On most engines the ECU adapts to the new chain automatically during the first warm-up drive cycle after the timing is set correctly and all fault codes are cleared — the closed-loop VVT control corrects for minor assembly variations within its adjustment range. However, on engines where the ECU has accumulated significant long-term camshaft timing correction values to compensate for the elongated chain's retarded phase, a camshaft timing adaptation reset via a manufacturer-specific scan tool is recommended to clear these stored corrections and allow the ECU to relearn from a clean baseline with the new chain's correct phase relationship. Always clear all fault codes after chain replacement and verify with a scan tool that camshaft timing codes do not return during a full warm-up cycle before confirming the repair is complete.
How does the OEM-equivalent aftermarket unit compare to the genuine OEM part?
OEM-equivalent units in this catalogue replicate the current OEM design geometry and material specification. Quality is verified against OEM cross-reference data. When ordering in bulk, confirm with our team that the specification matches the latest OEM revision for your application.
Is white-label or custom packaging available for wholesale orders?
Yes. ok.parts works directly with the manufacturing facility and can accommodate neutral white-label packaging or fully branded packaging with your company logo, part numbers, and barcode. Minimum order quantities and lead times for custom packaging may differ from standard stock. Contact the team via the inquiry form to discuss your specific requirements.
Frequently Replaced Together
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PartReason for Combined Replacement
Chain Tensioner and Guide Rail Set
Hydraulic tensioner, fixed and sliding guides		The tensioner and guide rails must always be replaced simultaneously with the chain — a tensioner at its maximum extension limit has no reserve capacity to accommodate the slight initial slack of a new chain during its bedding-in period, and worn guide grooves accelerate new chain wear from the first revolution. Fitting a new chain to old components is the single most common cause of timing chain system failure within a short mileage of a chain replacement service.
Camshaft and Crankshaft Sprockets
Complete sprocket set for the application		Sprocket teeth worn by a stretched chain have asymmetric flanks that do not match the new chain's roller geometry — the loaded side of each tooth has a hook profile that the new rollers ride over rather than engaging correctly, causing chain jump under high-torque deceleration events. Replacing all sprockets simultaneously with the chain eliminates this mismatch and ensures the complete timing drive operates as a matched new system with full resistance to chain jump.
Engine Oil and Filter
Grade and specification per OEM requirement		Timing chain elongation generates iron swarf from the worn pin and bushing surfaces that contaminates the entire oil circuit. Fitting a new chain into an engine filled with contaminated oil recirculates this abrasive swarf through the new chain's contact zones from the first revolution, reproducing the original wear mechanism. Always perform a complete oil and filter change immediately after chain replacement and repeat the oil change after the first 500–1,000 km to purge any residual swarf from the oil galleries.