Komatsu Dozer Track Tensioner & Recoil Spring

Each number on the image is a "Ref #" that can be matched on the table below.

Komatsu Dozer Track Tensioner & Recoil Spring parts list
REF #	Image	Fits Model	Description	Part #	Price	Product Details
	See Details	D31A-16, D31A-17, D31P-16, D31P-17, D31S-16, D31S-17, D31E-18*, D37E-1, D37E-2, D37P-2, D31P-20	Track Recoil Spring Cover, Right-Hand	11G-30-37121	$276.00	View Info
	See Details	BR200S-1, BM020C-1, BZ210-1-W1, D20–D85 series including D21, D31, D37, D39, D41, D61, D65, D68, D70, D85 (various versions and emissions specs)	Grease Valve	203-30-42260	$39.00	View Info
	See Details	D31A-16, D31A-17, D31AM-20, D31E-18, D31E-20, D31P-16, D31P-17, D31P-18, D31P-18A, D31P-20, D31P-20A, D31PL-18, D31Q-18, D31Q-20, D37A-5, D37E-1, D37E-2, D37E-5, D37P-2, D37P-5A, D31S-16, D31S-17, D31S-18, D31S-20	Cylinder, Track Adjuster	113-30-34231	$641.00	View Info
	See Details	D31A-16, D31A-17, D31P-16, D31P-17, D31S-16, D31S-17, D31E-18, s/n 32001-, D37E-1, D37E-2, D37P-2	Adjuster Assembly (Right Hand)	PV334	$880.00	View Info
	See Details	D31A-16, D31A-17, D31P-16, D31P-17, D31S-16, D31S-17, D31E-18, D37E-1, D37E-2, D37P-2	Adjuster Assembly (Left Hand)	PV333	$880.00	View Info
	See Details	D31A-16, D31A-17, D31P16, D31A-16, D31A-17, D31P16, D31P-17, D31S-16, D31S-17All After Serial #25000D31E-18 & D37E-1, D37E-2D37P-2	Track Recoil Spring and Adjuster, Left-Hand	PV328	From $2,058.00	View Info
	See Details	D31A-16, D31A-17, D31P16, D31P-17, D31S-16, D31S-17All After Serial #25000 D31E-18 & D37E-1, D37E-2D37P-2	Track Recoil Spring and Adjuster, Right-Hand	PV327	From $2,058.00	View Info
2	See Details	D31A-16, D31A-17, D31P16, D31P-17, D31S-16, D31S-17All After Serial #25000 D31E-18 & D37E-1, D37E-2D37P-2	Recoil Spring, Track Tension	113-30-34210	$453.00	View Info
	See Details	D31PX-21, D31PX-22	Recoil Spring Assembly	113-30-34211RSA	Call for Price	View Info
3	See Details	D31A-16, D31A-17, D31P-16, D31P-17, D31S-16, D31S-17	Track Adjuster Cylinder (Left-Hand)	113-30-34230	$641.00	View Info
	See Details	D51EX-22, D51PX-22	Recoil Spring Assembly	124-30-64110RSA	From $2,030.00	View Info
	See Details	D61EX-12, D68ESS-12	Track Recoil Spring	134-30-63162RSA	From $3,500.00	View Info
	See Details	D65EX-16, D65EX-17, D65EX-18	Recoil Spring Assembly	14X-30-51561RSA	From $3,500.00	View Info
	See Details	D85EX-15	Recoil Spring Assembly	154-30-73130RSA	Call for Price	View Info
4	See Details	D31A-16, D31A-17, D31P16, D31P-17, D31S-16, D31S-17All After Serial #25000D31E-18 & D37E-1, D37E-2D37P-2	Track Adjuster Cylinder, Right-Hand	113-30-34240	$641.00	View Info
	See Details	D85ESS-12	Track Recoil Spring Assembly	203-30-66250RSA	From $1,050.00	View Info
5	See Details	D31A-16, D31A-17, D31AM-20, D31E-18, D31E-20, D31P-16, D31P-17, D31P-18, D31P-18A, D31P-20, D31P-20A, D31PL-18, D37A-5, D37E-1, D37E-2, D37E-5, D37P-2, D37P-5A, D31Q-18, D31Q-20, D31S-16, D31S-17, D31S-18, D31S-20	Piston, Track Adjuster	113-30-24161	$138.00	View Info
	See Details	D41P-6, D41P-6K	Track Recoil Spring Kit	21K-30-24142RSA	From $3,150.00	View Info
	See Details	D61EX-12, D68ESS-12	Track Adjuster Spring Kit	RSAA70	From $3,080.00	View Info
7	See Details	D31A-16, D31A-17, D31P16, D31P-17, D31S-16, D31S-17All After Serial #25000D31E-18 & D37E-1, D37E-2D37P-2	Recoil Spring Cover, Left-Hand	113-30-37110	$302.00	View Info
7	See Details	D31A-16, D31A-17, D31P16, D31P-17, D31S-16, D31S-17All After Serial #25000D31E-18 & D37E-1, D37E-2D37P-2	Recoil Spring Cover, Right-Hand	113-30-37120	$302.00	View Info
8	See Details	(D31A-16, D31A-17, D31P-16, D31P-17, D31S-16, D31S-17, D31E-18 After Serial #25000), D37E-1, D37E-2, D37P-2	Track Adjuster Fork	113-30-34150	$547.00	View Info
	See Details	D31A-16, D31A-17, D31P-16, D31P-17, D31S-16, D31S-17 (After Serial Number 25000), D31E-18, D37E-1, D37E-2, D37P-2	Track Adjuster Seal Kit	0	909001	$115.00	View Info

Track tensioners, recoil springs, adjuster cylinders, spring covers, yokes, pistons, and seal kits for Komatsu crawler dozers — covering D20 through D85 series machines across multiple generations. Both left-hand and right-hand components are available individually or as complete assemblies, with many parts Made in USA by PVE Manufacturing.

Fits Models At A Glance

D20 / D21 Series: D20P-6, D20P-7, D20P-8, D21P-6, D21P-7, D21P-8
D31 Series: D31A-16, D31A-17, D31AM-20, D31E-18, D31E-20, D31P-16, D31P-17, D31P-18, D31P-18A, D31P-20, D31P-20A, D31PL-18, D31PX-21, D31PX-22, D31Q-18, D31Q-20, D31S-16, D31S-17, D31S-18, D31S-20
D37 Series: D37A-5, D37E-1, D37E-2, D37E-5, D37P-2, D37P-5A
D41 Series: D41P-6, D41P-6K
D51 Series: D51EX-22, D51PX-22
D61 / D65 / D68 Series: D61EX-12, D65EX-16, D65EX-17, D65EX-18, D68ESS-12
D85 Series: D85EX-15, D85ESS-12

Key Notes

Serial Number Breaks: Several D31E-18 and D31 series components apply only after specific serial number cutoffs — verify serial before ordering
Handed Components: Adjuster cylinders, recoil spring covers, and spring assemblies are available in left-hand and right-hand configurations
Assembly Options: Individual components (pistons, yokes, cylinders, springs, covers) and complete tensioner-recoil spring assemblies are both available
Seal Kits: Track adjuster seal kits cover D31 and D37 series applications
Grease Valve: Compatible grease valves span D20 through D85 series dozers

Why Choose Broken Tractor

✅ Made in USA options available for D31 and D37 series
✅ Wide model coverage from D20 through D85 dozers
✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH